Factors associated with poor adherence to medication in patients with diabetes and hypertension in Peru: findings from a pooled analysis of six years of population-based surveys.

OBJECTIVE: To evaluate the factors associated with poor medication adherence in patients with DM and HTN in Peru. STUDY DESIGN: A cross-sectional study. METHODS: We analyzed data from the Peruvian Demographic and Family Health Survey from 2014 to 2019. Adjusted prevalence ratios (aPR) and their respective 95% confidence intervals (CI) were estimated to determine the factors associated with poor medication adherence. RESULTS: We included 15,184 participants with a known diagnosis of DM and HTN. The frequency of poor medication adherence was 37.1%, with 36.7% among individuals with HTN and 29.2% among individuals with DM. Those belonging to age groups above 30 years (aPR: 0.77; 95% CI: 0.74-0.80, for the group ≥ 60 years) had a lower frequency of poor medication adherence. Meanwhile, being male (aPR: 1.03; 95% CI: 1.01-1.05), lacking health insurance (aPR: 1.08; 95% CI: 1.05-1.10), belonging to lower wealth quintiles (aPR: 1.12; 95% CI: 1.08-1.17, for the first quintile), and living in the mountain region (aPR: 1.09; 95% CI: 1.06-1.12) were associated with a higher frequency of poor medication adherence. These findings were consistent when stratifying by the type of disease. CONCLUSION: This study showed that poor medication adherence is common in patients with HTN and DM in Peru and is associated with sociodemographic factors, highlighting the importance of public health approaches to improve adherence.

Industry workers with hypertension and diabetes mellitus, the prevalence of self-reported adherence, and disease control

Abstract To evaluate the prevalence of self-reported drug adherence and factors associated, as well as clinical health outcomes, for industry workers with hypertension (HTN) and diabetes mellitus (DM). This was a cross-sectional study of 137 Brazilian industry workers with HTN and/ or DM. Self-reported adherence was assessed, and the disease control was defined through blood pressure and capillary glycemia values. Data were descriptively analyzed and the factors associated with adherence were evaluated using the Poisson model with robust variance to calculate prevalence ratios. The prevalence of self-reported drug adherence was 79.6% and the prevalence of disease control was 53.8%. There was no statistically significant association between the two variables. In the controlled disease group, non-adherence was associated with being under 40 years of age, not having a partner, and having a risky alcohol consumption habit. In the uncontrolled disease group, adherence was highest for participants aged 40 years and older. The prevalence of self-reported drug adherence was high, but the prevalence of disease control was low and not associated with adherence, indicating that the self-reported adherence measure may be inaccurate. Our findings identify some factors that explain non-adherent behavior in the workforce.

Adherencia farmacológica en pacientes hipertensos / Drug Adherence in Hypertensive Patients

Introducción: La falta de adherencia al tratamiento farmacológico es la principal razón de los pobres resultados observados en el control de la hipertensión arterial. Si bien los tratamientos farmacológicos han demostrado su eficacia, se ha reportado una baja adherencia a estos. Objetivo: Determinar la adherencia farmacológica y control de la presión arterial. Métodos: Se realizó un estudio descriptivo de corte transversal en pacientes hipertensos del consultorio # 24 del Policlínico Universitario Cerro, durante el periodo comprendido de octubre del 2017 a marzo del 2018. Resultados: De un total de 198 pacientes hipertensos estudiados, se identificó mayor prevalencia de la hipertensión arterial en hombres 51 por ciento y del grupo etario, 65 años. Solo el 43,9 por ciento de los pacientes se encontraron adheridos al tratamiento farmacológico demostrado por el test de Morisky Green Levine, y las mujeres mostraron mayor adherencia farmacológica (28,2 por ciento), los esquemas terapéuticos de monoterapia y monodosis presentaron mayor adherencia farmacológica (34,8 por ciento y 27,7 por ciento respectivamente), con asociación significativa (p < 0.05). El 71,7 por ciento de los pacientes se encontraban controlados, de ellos el 41,9 por ciento estaban adheridos farmacológicamente, con asociación significativa (p < 0.05). Conclusiones: Menos de la mitad de los pacientes se encontraban adheridos farmacológicamente, los esquemas terapéuticos de monoterapia y monodosis, resultaron más eficaces para la adherencia farmacológica y el control de la hipertensión arterial está influenciado directamente por la adherencia farmacológica(AU).

Introduction: Lack of adherence to drug treatment is the main reason for the poor outcomes observed in the control of high blood pressure. Although drug treatments have proven effective, low adherence to these has been reported. Objective: To determine drug adherence and blood pressure control. Methods: A descriptive, cross-sectional study was carried out with hypertensive patients of the family medicine office # 24 of Cerro University Polyclinic, during the period from October 2017 to March 2018. Results: From among a total of 198 hypertensive patients studied, a higher prevalence of arterial hypertension was identified in men (51 percent) and in the age group 65 years or older. Only 43.9 percentf the patients reported adherence to drug treatment, as demonstrated by the Morisky Green Levine test, while the women showed higher drug adherence (28.2 percent). The treatment schemes of monotherapy and single doses presented higher drug adherence (34.8 percent and 27.7 percent, respectively), with significant association (p<0.05). 71.7 percent of the patients were controlled, of which 41.9 percent reported drug adherence, with significant association (p<0.05). Conclusions: Less than half of the patients reported drug adherence. The treatment schemes of monotherapy and single dose were more effective for drug adherence, while high blood pressure control is directly influenced by drug adherence(AU)

Adherence to drug therapy in kidney disease

Non-adherence to drug therapy has not been extensively studied in patients with chronic kidney disease (CKD). The objective of the present study was to identify determinants of non-adherence to drug therapy in patients with CKD, not on dialysis. A prospective cohort study involving 149 patients was conducted over a period of 12 months. Adherence to drug therapy was evaluated by the self-report method at baseline and at 12 months. Patients who knew the type of drug(s) and the respective number of prescribed pills in use at the visit preceding the interview were considered to be adherent. Patients with cognitive decline were assessed by interviewing their caregivers. Mean patient age was 51 ± 16.7 years. Male patients predominated (60.4 percent). Univariate analysis performed at baseline showed that non-adherence was associated with older age, more pills taken per day, worse renal function, presence of coronary artery disease, and reliance on caregivers for the administration of their medications. In multivariate analysis, the factors that were significantly associated with non-adherence were daily use of more than 5 pills and drug administration by a caregiver. Longitudinal evaluation showed an increase in non-adherence over time. Medication non-adherence was lower (17.4 percent) at the baseline period of the study than after 1 year of the study (26.8 percent). Compared to the baseline period, the percentage of adherent patients who became non-adherent (22 percent) was lower than the percentage of non-adherent patients who became adherent (50 percent). In CKD patients not on dialysis, non-adherence was significantly associated with the number of pills taken per day and drug administration by third parties. Adherence is more frequent than non-adherence over time.

Factores que inlluyen la adherencia a la suplemntación con sulfato ferroso durrante el embarazo / Factors influencing adherence to supplementation with iron sulfate during pregnancy

El uso de sulfato ferroso en la prevención de las anemias durante el embarazo es obligatorio y gratuito a la paciente por el SUMI, sin embargo, se desconoce el nivel de adherencia a la prescripción durante los controles prenatales y los factores que influyen en la falta de adherencia, la identificación de estos factores corresponde al objetivo de este trabajo. Se presenta un estudio tipo caso control llevado a cabo en 182 mujeres que se encontraban en su puerperio inmediato en el Hospital Materno Infantil Germán Urquidi entre agosto y septiembre del 2009, de las cuales 135 pacientes fueron catalogadas con mala adherencia (casos) y 47 con buena adherencia (controles). Se buscaron factores epidemiológicos, factores dependientes de la terapéutica, efectos adversos, relación médico-paciente y percepción/actitudes frente al medicamento. Resultados: La adherencia reportada fue del 26%. La falta de estudios de primaria completos (OR=2,12; p=0,0355), la presencia de náuseas (OR 3,05; p= 0,02) y el tiempo prolongado de tratamiento (OR 2,46; p=0,011) demostraron estadísticamente disminuir la adherencia a sulfato ferroso. Contribuyen con una buena adherencia la toma del medicamento en un horario regular (0R=0,49 p=0,01) y la confianza en el médico que prescribió el sulfato ferroso (OR 0,34 p=0,046). Para lograr una buena adherencia de las mujeres se debe reforzar la relación médico - paciente y la explicación sobre los efectos del medicamento de acuerdo al nivel de instrucción de la paciente.

The use of ferrous sulfate in the prevention of anemia during pregnancy is free and required for patients by the Universal Maternal Child Insurance (SUMI), however, the level of drug adherence at prenatal checkups and the factors influencing non-adherence are unknown. The purpose of this study is the identification of these factors. We present a case-control study of 182 women in the immediate postpartum period in the "German Urquidi Maternal Child Hospital" from August to September 2009, of which 135 patients were categorized with poor adherence (cases) and 47 women with good adherence (controls). We analyzed epidemiological factors, therapy-dependent factors, adverse effects, physician-patient relationships, and patient perception / attitudes towards medication. Results: The drug adherence was 26%. Incomplete primary education (OR = 2.12, p = 0.0355), presence of nausea (OR 3.05, p = 0.02) and the long time of treatment (OR 2.46, p=0.011) demonstrated a negative effect on drug adherence. Factors associated with good drug adherence were a strict regular dosing schedule (OR = 0.49, p = 0.01) and a trusting relationship with the prescribing physician (OR 0.34, p = 0.046). To achieve a good drug adherence should improve the relation doctor - patients and explanations about the drug's effects by level of education of the patient.