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1.
Zhonghua Liu Xing Bing Xue Za Zhi ; 41(11): 1900-1904, 2020 Nov 10.
Artigo em Chinês | MEDLINE | ID: mdl-33297658

RESUMO

Objective: To explore the differences of adherence, lipid reduction and cost-effectiveness between brand-name and generic statins. Methods: Statins prescription records of adult patients aged 18 years and above with the first prescription of statins between January 2015 to December 2017, were collected from community health information system of Chaoyang district of Beijing. Medication compliancy after first prescription was compared between group only taking brand-name statins (41 496 records) and group only taking generic statins (60 491 records). Lipid reduction and cost-effectiveness were also compared between two groups. Results: The medication compliancy of generic statins was worse than brand-name statins (28.2% vs. 36.2%, P<0.001). After excluding the influence of age, sex, history of hypertension and diabetes, and community correlation, generic atorvastatin (20 mg/day) showed better total cholesterol reduction effect [(0.86±0.07) mmol/L] and better low density lipid-cholesterol reduction effect [(0.67±0.07) mmol/L] one year later in 199 patients who consistently used it compared with brand-name atorvastatin at same dosage in 232 patients [(0.40±0.10) mmol/L and (0.42±0.08) mmol/L] (P<0.001, P=0.003). From the perspective of cost effectiveness, generic atorvastatin (20 mg/day) can reduce more than 50% of medical expenses at the same cholesterol reduction level. Conclusions: Generic statins might replace brand-name statins with similar treatment effect but lower medical expenses although its compliancy needs improvement. However, the data of adverse reactions of generic statins are lacking, it is necessary to carry out high-quality clinical research to improve and promote the development of generic statins.


Assuntos
Atorvastatina , Medicamentos Genéricos , Inibidores de Hidroximetilglutaril-CoA Redutases , Adolescente , Adulto , Atorvastatina/economia , Atorvastatina/uso terapêutico , Pequim , Análise Custo-Benefício , Custos de Medicamentos/estatística & dados numéricos , Medicamentos Genéricos/economia , Medicamentos Genéricos/uso terapêutico , Humanos , Inibidores de Hidroximetilglutaril-CoA Redutases/economia , Inibidores de Hidroximetilglutaril-CoA Redutases/uso terapêutico , Adesão à Medicação/estatística & dados numéricos
2.
Value Health ; 23(10): 1340-1348, 2020 10.
Artigo em Inglês | MEDLINE | ID: mdl-33032778

RESUMO

OBJECTIVES: We applied principles for conducting economic evaluations of factorial trials to a trial-based economic evaluation of a cluster-randomized 2 × 2 × 2 factorial trial. We assessed the cost-effectiveness of atorvastatin, omega-3 fish oil, and an action-planning leaflet, alone and in combination, from a UK National Health Service perspective. METHODS: The Atorvastatin in Factorial With Omega EE90 Risk Reduction in Diabetes (AFORRD) Trial randomized 800 patients with type 2 diabetes to atorvastatin, omega-3, or their respective placebos and randomized general practices to receive a leaflet-based action-planning intervention designed to improve compliance or standard care. The trial was conducted at 59 UK general practices. Sixteen-week outcomes for each trial participant were extrapolated for 70 years using the United Kingdom Prospective Diabetes Study Outcomes Model v2.01. We analyzed the trial as a 2 × 2 factorial trial (ignoring interactions between action-planning leaflet and medication), as a 2 × 2 × 2 factorial trial (considering all interactions), and ignoring all interactions. RESULTS: We observed several qualitative interactions for costs and quality-adjusted life-years (QALYs) that changed treatment rankings. However, different approaches to analyzing the factorial design did not change the conclusions. There was a ≥99% chance that atorvastatin is cost-effective and omega-3 is not, at a £20 000/QALY threshold. CONCLUSIONS: Atorvastatin monotherapy was the most cost-effective combination of the 3 trial interventions at a £20 000/QALY threshold. Omega-3 fish oil was not cost-effective, while there was insufficient evidence to draw firm conclusions about action planning. Recently-developed methods for analyzing factorial trials and combining parameter and sampling uncertainty were extended to estimate cost-effectiveness acceptability curves within a 2x2x2 factorial design with model-based extrapolation.


Assuntos
Atorvastatina/uso terapêutico , Diabetes Mellitus Tipo 2/economia , Ácidos Graxos Ômega-3/uso terapêutico , Óleos de Peixe/uso terapêutico , Adulto , Atorvastatina/economia , Análise Custo-Benefício , Diabetes Mellitus Tipo 2/tratamento farmacológico , Diabetes Mellitus Tipo 2/prevenção & controle , Diabetes Mellitus Tipo 2/terapia , Custos de Medicamentos , Feminino , Custos de Cuidados de Saúde , Humanos , Masculino , Anos de Vida Ajustados por Qualidade de Vida , Comportamento de Redução do Risco
3.
Expert Rev Pharmacoecon Outcomes Res ; 20(5): 541-548, 2020 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-31483158

RESUMO

Background: The competition for and market dynamics of generic medicines can be understood by analyzing manufacturers' behavior. In this study, we analyzed the various types of generic atorvastatin and rosuvastatin that were introduced onto the South Korean market from 2002 to 2018 and their corresponding manufacturers. Methods: Based on publicly available data, we selected drugs containing atorvastatin and rosuvastatin as active ingredients for the analysis. We calculated the time between the date of marketing approval for the first generic and that of the remaining generics. Then, we categorized manufacturers that marketed generics into first movers and latecomers. Results: We confirmed that many manufacturers have marketed generic drugs in South Korea and that manufacturers can be categorized as first movers and latecomers. Interestingly, latecomers account for a large portion of the manufacturers of generics, and they have entered the market steadily, even after the market matured with a number of manufacturers. Additionally, the characteristics of the manufacturers were closely related to manufacturers' behaviors in the market. Conclusions: The order-of-entry effect, which is commonly observed in other markets, is marginal in the South Korean market, and this phenomenon is mainly explained by the rare price competition among generic manufacturers.


Assuntos
Atorvastatina/economia , Indústria Farmacêutica/economia , Medicamentos Genéricos/economia , Rosuvastatina Cálcica/economia , Anticolesterolemiantes/administração & dosagem , Anticolesterolemiantes/economia , Atorvastatina/administração & dosagem , Custos de Medicamentos , Competição Econômica , Humanos , Inibidores de Hidroximetilglutaril-CoA Redutases/administração & dosagem , Inibidores de Hidroximetilglutaril-CoA Redutases/economia , República da Coreia , Rosuvastatina Cálcica/administração & dosagem , Fatores de Tempo
5.
PLoS One ; 14(4): e0214783, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31026261

RESUMO

BACKGROUND: Catastrophic health expenditure (CHE) is an indicator used by the World Health Organization (WHO) to assess equity in households' payments to the health system. In this paper, we prospectively calculated the population at risk of facing catastrophic expenditure due to purchasing three selected medicines (metformin, atorvastatin and amoxicillin) in Iran. METHOD: This study draws on the data set of the Iranian National Household Survey of 38244 households in Iran. CHE was calculated based on "capacity to pay" using different thresholds. RESULTS: 20, 16 and 3 households had to spend more than 40% of their capacity to pay on amoxicillin, atorvastatin and metformin respectively. Lowest priced generic (LPG) medicines were found more affordable than the original brand (OB) medicines. Age, literacy and gender of head of household, economic status, settlement, size and number of breadwinners in the households share important association with CHE. CONCLUSION: Requirement of these specific medicines for long-term may subject the Iranian households to CHE. The study demonstrates important and specific insights for health policy makers in Iran to protect the households from healthcare catastrophes.


Assuntos
Doença Catastrófica/economia , Custos de Medicamentos , Gastos em Saúde , Adulto , Idoso , Idoso de 80 Anos ou mais , Amoxicilina/economia , Atorvastatina/economia , Estudos Transversais , Custos de Medicamentos/estatística & dados numéricos , Feminino , Financiamento Pessoal/economia , Gastos em Saúde/estatística & dados numéricos , Política de Saúde/economia , Humanos , Irã (Geográfico) , Masculino , Metformina/economia , Pessoa de Meia-Idade , Estudos Prospectivos , Inquéritos e Questionários
6.
BMJ Open ; 9(1): e024200, 2019 01 24.
Artigo em Inglês | MEDLINE | ID: mdl-30679294

RESUMO

OBJECTIVE: The objective of this study was to examine the impact of medicines price regulation (Drug Price Control Order, 2013) on the market share of atorvastatin in the Indian retail market for statins. SETTING: All Indian states, January 2012 to December 2015. DESIGN: Quasi-experimental-interrupted time series analysis. DATA: Pharmaceutical sales audit data set from IMS Health (now IQVIA) for the 48-month period from January 2012 to December 2015. OUTCOME MEASURE: Share of atorvastatin (in percentage) in the Indian market for statins in terms of sales volumes. RESULTS: We observed that the price regulation notification (Drug Price Control Orders, 2013) was associated with 0.12% (p<0.001; 95% CI 0.06 to 0.18) increase in the trend of the average monthly market share of atorvastatin (5 mg and 10 mg). After 31 months of price ceilings notification, the average market share of atorvastatin was 3.41% higher than would have been expected had the price ceilings not been notified. In sensitivity analysis, with a control, our findings remain robust, we observed a 0.16% (p<0.001; 95% CI 0.08 to 0.24) rise in the trend of average monthly market share of atorvastatin (5 mg and 10 mg) as compared with the change in the control. CONCLUSIONS: Price control as a public intervention did improve the relative sales of atorvastatin in the statin market in India.


Assuntos
Atorvastatina/uso terapêutico , Comércio/estatística & dados numéricos , Custos e Análise de Custo/legislação & jurisprudência , Inibidores de Hidroximetilglutaril-CoA Redutases/uso terapêutico , Atorvastatina/economia , Indústria Farmacêutica , Gastos em Saúde , Humanos , Inibidores de Hidroximetilglutaril-CoA Redutases/economia , Índia , Análise de Séries Temporais Interrompida , Legislação de Medicamentos
7.
Clin Pharmacol Ther ; 105(6): 1513-1521, 2019 06.
Artigo em Inglês | MEDLINE | ID: mdl-30659590

RESUMO

Methodologic research evaluating confounding due to socioeconomic status (SES) in observational studies of medications is limited. We identified 7,109 patients who initiated brand or generic atorvastatin from Medicare claims (2011-2013) linked to electronic medical records and census data. We created a propensity score (PS) containing only claims-based covariates and augmented it with additional claims-based proxies for SES, ZIP code, and block group level SES. Cox models with PS fine-stratification and weighting were used to compare rates of a cardiovascular end point and emergency department visits. Adjustment with only claims-based variables substantially improved balance on all SES variables compared with the unadjusted. Although inclusion of SES in PS models further improved balance on SES variables compared with models with claims-based covariates only, it did not materially change point estimates for either outcome. Inclusion of claims-based proxies may mitigate confounding by SES when aggregate-level SES information is unavailable.


Assuntos
Atorvastatina/uso terapêutico , Medicamentos Genéricos/uso terapêutico , Registros Eletrônicos de Saúde/tendências , Medicare/tendências , Classe Social , Idoso , Idoso de 80 Anos ou mais , Atorvastatina/economia , Doenças Cardiovasculares/tratamento farmacológico , Doenças Cardiovasculares/economia , Doenças Cardiovasculares/epidemiologia , Estudos de Coortes , Medicamentos Genéricos/economia , Registros Eletrônicos de Saúde/economia , Feminino , Humanos , Masculino , Medicare/economia , Pessoa de Meia-Idade , Pontuação de Propensão , Estados Unidos/epidemiologia
8.
WHO South East Asia J Public Health ; 7(2): 99-106, 2018 09.
Artigo em Inglês | MEDLINE | ID: mdl-30136668

RESUMO

Background: Little is known about how the different policies available to promote use of generic medicines affect the price per unit supplied or sold. This study compares the influence of pricing policies for generic medicines on atorvastatin prices in Australia, New Zealand, the Republic of Korea and Singapore, after market entry of generic atorvastatin. Methods: The annual price of atorvastatin per defined daily dose supplied (price/DDD) was examined for each country from 2006 to 2015 (≥2 years before and ≥4 years after generic market entry). Prices were converted to international dollars and cumulative percentage price reductions were calculated for the first 4 years following generic entry. Results: Prior to market entry of generic atorvastatin, New Zealand had the lowest price ($0.10/DDD), and the Republic of Korea the highest ($2.89/DDD). The price/DDD fell immediately after generic entry in all countries except New Zealand, which already had low prices. The largest immediate decrease was observed in Singapore (46%, year 1). By the fourth year after generic entry, the price had fallen by 46-80% in all countries; however, large price differences between countries remained. Conclusion: New Zealand's tendering system and use of preferred medicines resulted in very low atorvastatin prices well before patent expiry. Pricing policies in the other three countries were effective in reducing atorvastatin prices, with reductions of between 46% and 80% within 4 years of generic entry. Where tendering and use of preferred medicines were the mechanisms for atorvastatin procurement (New Zealand), prices were lowest before and after generic entry. Mandatory price cuts, combined with price-disclosure policies (Australia), produced similar relative price reductions to tendering systems (New Zealand, Singapore) at 4 years. By comparison, mandatory price cuts upon generic entry as the sole measure, while initially effective, were associated with the smallest relative reduction in price after 4 years (Republic of Korea).


Assuntos
Custos de Medicamentos , Medicamentos Genéricos/economia , Política de Saúde , Atorvastatina/economia , Austrália , Comércio , Humanos , Nova Zelândia , Patentes como Assunto , República da Coreia , Singapura
10.
Hawaii J Med Public Health ; 76(4): 99-102, 2017 04.
Artigo em Inglês | MEDLINE | ID: mdl-28428922

RESUMO

Statins are lipid-lowering medications used for primary and secondary prevention of atherosclerotic disease and represent a substantial portion of drug costs in the United States. A better understanding of prescribing patterns and drug costs should lead to more rational utilization and help constrain health care expenditures in the United States. The 2013 Medicare Provider Utilization and Payment Data: Part D Prescriber Public Use File for the State of Hawai'i was analyzed. The number of prescriptions for statins, total annual cost, and daily cost were calculated by prescriber specialty and drug. Potential savings from substituting the highest-cost statin with lower-cost statins were calculated. Over 421,000 prescriptions for statins were provided to Medicare Part D beneficiaries in Hawai'i in 2013, which cost $17.6M. The three most commonly prescribed statins were simvastatin (33.4%), atorvastatin (33.4%), and lovastatin (13.9%). Although rosuvastatin comprised 5.4% of the total statin prescriptions, it represented 30.1% of the total cost of statins due to a higher daily cost ($5.53/day) compared to simvastatin ($0.25/day) and atorvastatin ($1.10/day). Cardiologists and general practitioners prescribed the highest percentage of rosuvastatin (8% each). Hypothetical substitution of rosuvastatin would have resulted in substantial annual cost savings (Simvastatin would have saved $1.3M for 25% substitution and $5.1M for 100% substitution, while atorvastatin would have saved $1.1M for 25% substitution and $4.3M for 100% substitution). Among Medicare Part D beneficiaries in Hawai'i, prescribing variation for statins between specialties were observed. Substitution of higher-cost with lower-cost statins may lead to substantial cost savings.


Assuntos
Custos de Medicamentos/estatística & dados numéricos , Inibidores de Hidroximetilglutaril-CoA Redutases/economia , Padrões de Prática Médica/economia , Atorvastatina/economia , Atorvastatina/uso terapêutico , Análise Custo-Benefício , Estudos Transversais , Custos de Medicamentos/normas , Havaí , Humanos , Inibidores de Hidroximetilglutaril-CoA Redutases/uso terapêutico , Lovastatina/economia , Lovastatina/uso terapêutico , Medicare/economia , Medicare/estatística & dados numéricos , Estudos Retrospectivos , Rosuvastatina Cálcica/economia , Rosuvastatina Cálcica/uso terapêutico , Sinvastatina/economia , Sinvastatina/uso terapêutico , Estados Unidos
11.
Rev Esp Cardiol (Engl Ed) ; 70(1): 42-49, 2017 Jan.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-27474481

RESUMO

INTRODUCTION AND OBJECTIVES: To estimate the health benefits and cost-effectiveness of a polypill intervention (aspirin 100 mg, atorvastatin 20 mg, ramipril 10 mg) compared with multiple monotherapy for secondary prevention of cardiovascular events in adults with a history of myocardial infarction from the perspective of the Spanish National Health System. METHODS: An adapted version of a recently published Markov model developed and validated in Microsoft Excel was used to compare the cost-effectiveness of the polypill with that of its combined monocomponents over a 10-year time horizon. The population included in the model had a mean age of 64.7 years; most were male and had a history of myocardial infarction. The input parameters were obtained from a systematic literature review examining efficacy, adherence, utilities, and costs. The results of the model are expressed in events avoided, incremental costs, incremental life years, incremental quality-adjusted life years, and the incremental cost-effectiveness ratio. RESULTS: Over a 10-year period, use of the cardiovascular polypill instead of its monocomponents simultaneously would avoid 46 nonfatal and 11 fatal cardiovascular events per 1000 patients treated. The polypill would also be a more effective and cheaper strategy. Probabilistic analysis of the base case found a 90.9% probability that the polypill would be a cost-effective strategy compared with multiple monotherapy at a willingness-to-pay of 30 000 euros per quality-adjusted life year. CONCLUSIONS: The polypill would be a cost-effective strategy for the Spanish National Health System with potential clinical benefits.


Assuntos
Aspirina/uso terapêutico , Atorvastatina/uso terapêutico , Doenças Cardiovasculares/prevenção & controle , Custos de Medicamentos/tendências , Previsões , Ramipril/uso terapêutico , Prevenção Secundária/métodos , Adulto , Inibidores da Enzima Conversora de Angiotensina/economia , Inibidores da Enzima Conversora de Angiotensina/uso terapêutico , Aspirina/economia , Atorvastatina/economia , Doenças Cardiovasculares/economia , Doenças Cardiovasculares/epidemiologia , Análise Custo-Benefício , Quimioterapia Combinada , Feminino , Seguimentos , Humanos , Inibidores de Hidroximetilglutaril-CoA Redutases/economia , Inibidores de Hidroximetilglutaril-CoA Redutases/uso terapêutico , Incidência , Masculino , Cadeias de Markov , Adesão à Medicação , Pessoa de Meia-Idade , Inibidores da Agregação Plaquetária/economia , Inibidores da Agregação Plaquetária/uso terapêutico , Anos de Vida Ajustados por Qualidade de Vida , Ramipril/economia , Estudos Retrospectivos , Espanha/epidemiologia
12.
J Am Heart Assoc ; 5(11)2016 11 11.
Artigo em Inglês | MEDLINE | ID: mdl-27836822

RESUMO

BACKGROUND: Cost sharing is widely used to encourage therapeutic substitution. This study aimed to examine the impact of increases in patient cost-sharing differentials for brand name and generic drugs on statin utilization on entry into the Medicare Part D coverage gap. METHOD AND RESULTS: Using 5% Medicare Chronic Condition Warehouse files from 2006, this quasi-experimental study examined patients with hyperlipidemia who filled prescriptions for atorvastatin or rosuvastatin between January and March 2006. Propensity score matching and difference-in-difference regressions were used to compare changes in statin utilization for the study group (patients who were not eligible for low-income subsidies [non-LIS] and had generic-only gap coverage) to those of a control group (LIS patients who faced the same cost sharing before and during the Part D coverage gap). In the final sample, 801 patients in the study group were matched to 801 patients in the control group. We found that, compared to the control group, the study group had a larger decline in any monthly brand-name statin use (-0.24 30-day fills, P<0.001). This was only partially offset by increased monthly generic statin use (+0.06 30-day fill, P<0.001), with an overall drop in any monthly statin use (-0.18 30-day fills, P<0.001). Overall adherence with statins declined (OR 0.81, P<0.001), and statin discontinuation increased (OR 1.62, P<0.001) in the study group as compared to the control group. CONCLUSIONS: Increases in cost-sharing differentials for brand name and generic drugs on coverage gap entry were associated with discontinuation of statins in Medicare Part D patients with hyperlipidemia.


Assuntos
Atorvastatina/uso terapêutico , Inibidores de Hidroximetilglutaril-CoA Redutases/uso terapêutico , Hiperlipidemias/tratamento farmacológico , Rosuvastatina Cálcica/uso terapêutico , Idoso , Atorvastatina/economia , Custo Compartilhado de Seguro , Custos de Medicamentos , Substituição de Medicamentos , Medicamentos Genéricos , Feminino , Humanos , Inibidores de Hidroximetilglutaril-CoA Redutases/economia , Modelos Logísticos , Masculino , Medicare Part D/economia , Adesão à Medicação , Razão de Chances , Pontuação de Propensão , Rosuvastatina Cálcica/economia , Estados Unidos
13.
N Z Med J ; 129(1443): 18-29, 2016 Oct 14.
Artigo em Inglês | MEDLINE | ID: mdl-27736849

RESUMO

AIM: Publicly-funded atorvastatin required prior approval until September 2010 whereas simvastatin did not. Our aim was to examine if overall statin dispensing and atorvastatin dispensing among patients hospitalised for cardiovascular disease (CVD) differed systematically across sociodemographic groups during and after special authority criteria. METHOD: National medication dispensing data were anonymously linked to patients hospitalised across New Zealand with CVD and discharged between 1/07/2009-31/12/2009 when special authority criteria applied and 1/09/2010-28/02/2011 after restrictions ceased. Statin dispensing at least once within six months post-discharge was analysed by sociodemographic characteristics. RESULTS: Overall statin use was the same (80%) among patients discharged during (n=14,094) and after (n=13,274) restrictions. With restrictions, atorvastatin dispensing was 32-33% less frequent among statin-users <45 years and >75 years than 65-74 year olds and 28-55% less among Maori, Pacific and Indian peoples than all others. Minimal relative differences occurred by sex or deprivation status. After restrictions were lifted, the proportion of statin-users dispensed atorvastatin increased around two-fold or more across all sociodemographic strata with three-four fold increases for patients >55 years and for Maori, Pacific and Indian peoples. CONCLUSION: After funding restrictions ceased, disparities in atorvastatin dispensing appeared to reduce across age and ethnic groups among patients with CVD-related hospitalisations, but overall statin use was unchanged.


Assuntos
Atorvastatina/economia , Doenças Cardiovasculares/tratamento farmacológico , Doenças Cardiovasculares/mortalidade , Prescrições de Medicamentos/estatística & dados numéricos , Inibidores de Hidroximetilglutaril-CoA Redutases/economia , Adulto , Idoso , Atorvastatina/uso terapêutico , Prescrições de Medicamentos/economia , Feminino , Disparidades em Assistência à Saúde/etnologia , Hospitalização , Humanos , Inibidores de Hidroximetilglutaril-CoA Redutases/uso terapêutico , Armazenamento e Recuperação da Informação , Masculino , Pessoa de Meia-Idade , Havaiano Nativo ou Outro Ilhéu do Pacífico , Nova Zelândia/epidemiologia , Análise de Regressão
14.
Acta Pol Pharm ; 73(3): 725-30, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27476290

RESUMO

Atorvastatin reduces morbidity and mortality due to cardiovascular events. This study was conducted to assess the prices and pharmaceutical quality of innovator atorvastatin 20 mg with its locally available generics in Palestine and to assess the suitability of their interchangeability. The prices of innovator and generic atorvastatin 20 mg were determined and compared. Innovator atorvastatin and four generic products were tested for their pharmaceutical quality. Tablets were tested for their drug contents, weight uniformity, hardness, disintegration and dissolution. Three out of four generics were less expensive than the innovator. Pharmaceutical quality assessments were satisfactory and within limits for all atorvastatin tested products. The average weight ranged from 206.6 ± 8.40 to 330 ± 3.92 mg and the %RSDs were within the permitted limits as per USP. Tablet hardness ranged from 102 ± 1.41 to 197.4 ± 6.88 kg and drug contents ranged from 92.2% to 105.3%. All products disintegrated within permitted time limits and showed very rapid dissolution. Products released more than 85% of their drug contents in less than 15 min. Our results showed that all tested innovator and generic atorvastatin products were of good pharmaceutical quality. Despite the lack of in vivo evaluation, our results indicate that these products are equivalent in vitro. Considering the in vitro release characteristics, these products might be used interchangeably. However, regulatory authorities permit the use of in vitro data in establishing similarity between immediate release oral dosage forms containing biopharmaceutical classification system class I and III drugs only.


Assuntos
Atorvastatina/economia , Atorvastatina/farmacologia , Inibidores de Hidroximetilglutaril-CoA Redutases/economia , Inibidores de Hidroximetilglutaril-CoA Redutases/farmacologia , Atorvastatina/normas , Química Farmacêutica , Custos de Medicamentos , Medicamentos Genéricos , Inibidores de Hidroximetilglutaril-CoA Redutases/normas , Israel , Equivalência Terapêutica
15.
JAMA Intern Med ; 176(9): 1317-23, 2016 09 01.
Artigo em Inglês | MEDLINE | ID: mdl-27367749

RESUMO

IMPORTANCE: In November 2011, the cholesterol level-lowering medication atorvastatin calcium became available in the United States as a generic drug. However, only a single generic form (from a manufacturer that qualified for market exclusivity by challenging several of Pfizer's patents) and an authorized generic form (a brand-name drug sold as a generic) were available for the first 180 days. OBJECTIVE: To describe trends in the prescribing of generic atorvastatin after expiration of market exclusivity for the brand-name medication and the effect on patients' out-of-pocket spending. DESIGN, SETTING, AND PARTICIPANTS: A US population-based study used commercial claims data from the Optum Clinformatics research database (UnitedHealth Group) from December 1, 2010, to May 31, 2013. Participants were 1 968 709 adults with commercial insurance who had been prescribed 1 or more statins (13 285 223 statin prescriptions). An interrupted times series model was used to examine the effect of limited and full generic competition on brand-name and generic atorvastatin prescriptions. Data were analyzed from December 1, 2010, to May 31, 2013. EXPOSURES: Prescription of brand-name atorvastatin, generic atorvastatin, and authorized generic atorvastatin were distinguished using National Drug Codes. MAIN OUTCOMES AND MEASURES: Total number of prescriptions dispensed per month and out-of-pocket expenditures for a typical 30-day supply of 20-mg atorvastatin during the periods of brand-name availability only, limited generic competition (lasting 180 days after market exclusivity ended), and full generic competition. RESULTS: Of the 1 968 709 beneficiaries, 1 483 066 (58.8% male and 41.2% female; mean [SD] age, 55.6 [10.2] years) received a prescription for a single statin and were included in the analysis. The introduction of the first generic competitor was associated with a reduction in monthly brand-name atorvastatin fills by 20 896 prescriptions (level change, P = .001), an 18.1% change compared with the month preceding loss of exclusivity. Full generic competition reduced brand-name fills by 54 944 prescriptions (level change, P < .001), a 47.6% change relative to the month preceding loss of exclusivity. During the first 180 days of generic competition, no meaningful difference in monthly out-of-pocket spending was found between brand-name (median, $16.98; interquartile range [IQR], $8.76-$48.66) and generic (median, $19.98; IQR, $7.50-$54.90) atorvastatin. After full generic competition, estimated monthly out-of-pocket spending for generic atorvastatin (median $5.10; IQR, $3.36-$19.98) or authorized generic atorvastatin (median, $5.52; IQR, $3.48-$19.98) was substantially lower than that for brand-name atorvastatin (median, $30.00; IQR, $15.00-$91.38). CONCLUSIONS AND RELEVANCE: Among patients with commercial health insurance, delays in generic uptake and high levels of out-of-pocket spending during the first 180 days after atorvastatin lost market exclusivity slowed changes in drug prescribing and decreases in patients' out-of-pocket costs.


Assuntos
Atorvastatina/economia , Prescrições de Medicamentos/estatística & dados numéricos , Medicamentos Genéricos/economia , Medicamentos Genéricos/provisão & distribuição , Gastos em Saúde/estatística & dados numéricos , Inibidores de Hidroximetilglutaril-CoA Redutases/economia , Estudos de Coortes , Competição Econômica , Feminino , Humanos , Seguro Saúde , Masculino , Pessoa de Meia-Idade , Estados Unidos/epidemiologia
16.
Health Policy ; 119(9): 1255-64, 2015 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-25929214

RESUMO

OBJECTIVES: In the Czech Republic (CZ) extensive price regulation and prescribing conditions are common instruments often employed with new drugs. Since the introduction of statins onto the market in 1990s the originally strict conditions gradually relaxed while the prescription rates and public costs were rising. The aim was to analyze long-term utilization trends of statins, changes in their reimbursement prices and prescribing conditions, and the evolution of the market. METHODS: From January 1997 to December 2013 statin use was measured in terms of defined daily doses per 1000 insured per day (DDD/TID). The prescription-based database of the General Health Insurance Company of the Czech Republic in 1997 covering 7825,216 inhabitants, i.e. 76% of CZ population, was used as the administrative data source. Also the overall expenditure, unit prices, and reimbursement criteria were analyzed. RESULTS: Between 1997 and 2013 the utilization of statins rose from 2 to 96 DDD/TID while the expenditure rose 5.5-fold. The rise of prescription for each molecule was always observed after the liberation of the prescribing criteria. In the study period reimbursement prices of simvastatin and atorvastatin gradually decreased to just 5% of their initial values. CONCLUSIONS: The rising consumption of statins in CZ clearly corresponds in time with the liberation of prescribing conditions allowing for prescription by general practitioners and with the introduction of generics accompanied by a swift and repeated reimbursement price cuts.


Assuntos
Custos de Medicamentos/estatística & dados numéricos , Inibidores de Hidroximetilglutaril-CoA Redutases/uso terapêutico , Padrões de Prática Médica/estatística & dados numéricos , Atorvastatina/economia , Atorvastatina/uso terapêutico , República Tcheca , Substituição de Medicamentos/economia , Política de Saúde/economia , Humanos , Inibidores de Hidroximetilglutaril-CoA Redutases/economia , Seguro Saúde/economia , Padrões de Prática Médica/economia , Mecanismo de Reembolso/economia , Sinvastatina/economia , Sinvastatina/uso terapêutico
17.
J Med Econ ; 18(8): 565-72, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-25788039

RESUMO

BACKGROUND: Statin monotherapy is the mainstay of low-density lipoprotein cholesterol (LDL-C) management for high cardiovascular risk patients in Portugal; however, several therapeutic options are available and predicted to have different clinical and economic impacts. The aim of this study was to evaluate the cost-effectiveness of adding ezetimibe 10 mg (EZ10) to atorvastatin 10 or 20 mg (A10/20) vs switching to rosuvastatin 10 or 20 mg (R10/20) in Portuguese patients with coronary heart disease (CHD) and/or diabetes who are currently above the LDL-C goal. METHODS: A Markov model was used to describe CHD disease progression and the lifetime costs and utilities associated with each disease state were used to estimate the gains in life-years and quality-adjusted life-years (QALYs), as well as the incremental cost-effectiveness ratio (ICER), of the two treatment regimens. Model inputs, such as age, gender, and prevalence of cardiovascular risk factors of the dyslipidemic Portuguese patients were obtained from the Portuguese cohort of the Dyslipidemia International Study (DYSIS). The efficacy of each treatment regimen, the cost of drugs and of treating CHD events, and the utilities for each disease state were derived from published sources. RESULTS: The estimated lifetime discounted number of QALYs gained by patients treated with A10/20 was 8.70, while in those switching to R10/20 it was 8.81 and in those adding EZ10 it was 8.93. Discounted total health costs were estimated to be €11,131 for A10/20, but €14,511 and €16,571 for R10/20 and A10/20 + EZ10, respectively. The ICER of adding ezetimibe vs switching to rosuvastatin was €16,465/QALY. Based on the Portuguese cost-effectiveness willingness-to-pay threshold of €30,000/QALY, adding ezetimibe vs switching to rosuvastatin would be a cost-effective use of resources in Portugal. Sensitivity analyses in patients with differing clinical histories (CHD or diabetes or both) yielded similar values, with no ICER over €30,000/QALY. CONCLUSIONS: From the perspective of the National Health Service, prescribing ezetimibe to high cardiovascular risk patients being treated with atorvastatin vs switching them to rosuvastatin is projected to be a cost-effective use of resources in Portugal.


Assuntos
Anticolesterolemiantes/administração & dosagem , Anticolesterolemiantes/economia , Doença das Coronárias/prevenção & controle , Dislipidemias/tratamento farmacológico , Idoso , Anticolesterolemiantes/uso terapêutico , Atorvastatina/administração & dosagem , Atorvastatina/economia , Doença das Coronárias/epidemiologia , Análise Custo-Benefício , Diabetes Mellitus/epidemiologia , Relação Dose-Resposta a Droga , Quimioterapia Combinada , Dislipidemias/epidemiologia , Ezetimiba/administração & dosagem , Ezetimiba/economia , Feminino , Humanos , Lipídeos/sangue , Masculino , Pessoa de Meia-Idade , Portugal , Anos de Vida Ajustados por Qualidade de Vida , Fatores de Risco , Rosuvastatina Cálcica/administração & dosagem , Rosuvastatina Cálcica/economia , Fumar/epidemiologia
18.
Clin Investig Arterioscler ; 27(5): 228-38, 2015.
Artigo em Espanhol | MEDLINE | ID: mdl-25640158

RESUMO

INTRODUCTION AND OBJECTIVES: To estimate the cost-effectiveness of rosuvastatin versus simvastatin, atorvastatin and pitavastatin in Spain, according to the European guidelines for the treatment of dyslipidemias in patients with high and very high cardiovascular risk. METHODS: A Markov long-term cost-effectiveness model of rosuvastatin versus simvastatin, atorvastatin and pitavastatin in patients with high and very high cardiovascular risk defined according to 5 factors (sex, age, smoking habit, baseline cholesterol level, and systolic blood pressure) using the SCORE system. The incremental cost-effectiveness ratio is expressed in euros per quality adjusted life years and is calculated according to the perspective of the Spanish National Health System. RESULTS: Rosuvastatin is associated with a greater health benefit than the other statins across the considered profiles. Rosuvastatin is cost-effective compared to simvastatin in patients with SCORE risk ≥8% in females and ≥6% in males, while between 5% and the indicated values its cost-effectiveness is conditional to the patient baseline c-LDL level. Rosuvastatin is more cost-effective versus atorvastatin in female profiles associated with a SCORE risk≥11% and male profiles with SCORE risk ≥10%. Rosuvastatin is superior versus pitavastatin in both female and male profiles with high and very high cardiovascular risk. CONCLUSIONS: Rosuvastatin is a cost-effective therapy in the treatment of hypercholesterolemia versus simvastatin, atorvastatin and pitavastatin, especially in specific profiles of patients with high and very high cardiovascular risk factors, according to the SCORE system, in Spain.


Assuntos
Doenças Cardiovasculares/prevenção & controle , Dislipidemias/tratamento farmacológico , Inibidores de Hidroximetilglutaril-CoA Redutases/uso terapêutico , Rosuvastatina Cálcica/uso terapêutico , Adulto , Idoso , Atorvastatina/economia , Atorvastatina/uso terapêutico , Doenças Cardiovasculares/economia , Doenças Cardiovasculares/etiologia , Análise Custo-Benefício , Dislipidemias/complicações , Dislipidemias/economia , Feminino , Humanos , Inibidores de Hidroximetilglutaril-CoA Redutases/economia , Masculino , Cadeias de Markov , Pessoa de Meia-Idade , Modelos Econômicos , Quinolinas/economia , Quinolinas/uso terapêutico , Fatores de Risco , Rosuvastatina Cálcica/economia , Sinvastatina/economia , Sinvastatina/uso terapêutico , Espanha
19.
Expert Rev Pharmacoecon Outcomes Res ; 15(2): 323-30, 2015 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-25338546

RESUMO

INTRODUCTION: Statins are recommended first-line treatment for hyperlipidemia, with published studies suggesting limited differences between them. However, there are reports of under-dosing. South Africa has introduced measures to enhance generic utilization. Part one documents prescribed doses of statins in 2011. Part two determines the extent of generics versus originator and single-sourced statins in 2011 and their costs. RESULTS: Underdosing of simvastatin in 2011 with average prescribed dose of 23.7 mg; however, not for atorvastatin (20.91 mg) or rosuvastatin (15.02 mg). High utilization of generics versus originators at 93-99% for atorvastatin and simvastatin, with limited utilization of single-sourced statins (22% of total statins - defined daily dose basis), mirroring Netherlands, Sweden and UK. Generics priced 33-51% below originator prices. DISCUSSION: Opportunity to increase simvastatin dosing through education, prescribing targets and incentives. Opportunity to lower generic prices with generic simvastatin 96-98% below single-sourced prices in some European countries.


Assuntos
Medicamentos Genéricos/uso terapêutico , Inibidores de Hidroximetilglutaril-CoA Redutases/uso terapêutico , Hiperlipidemias/tratamento farmacológico , Padrões de Prática Médica/normas , Atorvastatina/administração & dosagem , Atorvastatina/economia , Atorvastatina/uso terapêutico , Relação Dose-Resposta a Droga , Custos de Medicamentos , Medicamentos Genéricos/administração & dosagem , Medicamentos Genéricos/economia , Humanos , Inibidores de Hidroximetilglutaril-CoA Redutases/administração & dosagem , Inibidores de Hidroximetilglutaril-CoA Redutases/economia , Padrões de Prática Médica/tendências , Rosuvastatina Cálcica/administração & dosagem , Rosuvastatina Cálcica/economia , Rosuvastatina Cálcica/uso terapêutico , Sinvastatina/administração & dosagem , Sinvastatina/economia , Sinvastatina/uso terapêutico , África do Sul
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