ABSTRACT
BACKGROUND: The aim of the study was to explore rhinitis therapy purchases in different Australian regions for patients with and without additional respiratory disease, using both doctor's prescriptions and over-the-counter (OTC) medications. PATIENTS AND METHODS: It was a historical cohort study of pharmacy-related claims that included prescription or OTC rhinitis therapy, with or without asthma/COPD therapy, from January 2013 to December 2014. RESULTS: Overall, 4,247,193 prescription and OTC rhinitis treatments were purchased from 909 pharmacies over a calendar year; the majority were single-therapy purchases for rhinitis only patients. More multiple-therapy was purchased for rhinitis and asthma/COPD patients (4.4%) than for rhinitis only patients (4.0%), with a greater proportion purchased in VIC, SA and TAS (4.7% of rhinitis only patients and 4.5% of rhinitis and asthma/COPD patients) than in other areas. Dual therapy of oral antihistamine (OAH) and intranasal corticosteroid (INS) were the most frequently purchased multiple-therapy, with higher purchasing rates for rhinitis and asthma/COPD patients (2.6%) than for rhinitis only patients (1.6%). The most frequently purchased single therapy was OAH (70.1% of rhinitis only patients and 57.3% of rhinitis and asthma/COPD patients). First-line INS therapy was more likely to be purchased for rhinitis and asthma/COPD patients (15.3% by prescription and 11.7% OTC) than for rhinitis only patients (5.0% by prescription and 9.2% OTC); however, geographical differences in the proportion of therapies purchased OTC were noted, with a lower proportion of OTC OAH and INS purchases in Queensland and the Northern Territory for patients with and without comorbid respiratory disease. CONCLUSION: Purchases of first-line INS therapy are more likely for patients with comorbid respiratory disease if they have received prescriptions and information/advice from their general practitioner. The study results indicate a need for patient information/education at the point-of-sale of OTC OAHs to enable patients to assess their nasal symptoms and receive treatment support from pharmacists. Greater availability to INSs in pharmacies as well as guidance from current guidelines and instruction in correct intranasal technique may also lead to greater uptake of INSs.
ABSTRACT
PURPOSE: To explore patterns in the purchase of prescription and over-the-counter (OTC) oral antihistamines (OAHs) and intranasal corticosteroids (INCSs) by patients, from pharmacies in different geographical regions of Australia. PATIENTS AND METHODS: Retrospective observational study using a database containing anonymous pharmacy transaction data from 20.0% of the pharmacies in Australia that link doctor prescriptions and OTC information. Pharmacy purchases of at least one prescription or OTC rhinitis treatment during 2013 and 2014 were assessed. RESULTS: In total, 4,247,193 prescription and OTC rhinitis treatments were purchased from 909 pharmacies over 12 months. Of treatments purchased, 75.9% were OAHs and 16.6% were INCSs. OTC purchases of both treatments exceeded purchases through prescription. OTC OAHs purchasing patterns were seasonal and almost identical in the Australian Capital Territory, Victoria, Western Australia, South Australia, and New South Wales, and similar seasonal patterns for OTC INCSs were noted in most regions except for South Australia and Tasmania. Prescription purchasing patterns of both OAHs and INCSs remained unchanged throughout the year in most regions. CONCLUSION: This large-scale retrospective observational study identified seasonal purchasing patterns of OTC and prescription OAHs and INCSs in a real-world setting. It highlighted that seasonality only affects OTC purchasing patterns of OAHs and INCSs across Australia and that practitioner prescribing remains unchanged, suggesting that it is only for persistent disease.
ABSTRACT
PURPOSE: There is a relative paucity of research regarding medication expenditure associated with multiple-therapy use for rhinitis in Australia. To describe 1) the nature and extent of multiple-therapy use for rhinitis in Australia using data on therapies purchased with prescription or over-the-counter (OTC) and 2) additional costs incurred by multiple-therapy use compared with intranasal corticosteroid (INCS) therapy alone. PATIENTS AND METHODS: A retrospective observational study was carried out using a database containing anonymous pharmacy transaction data available from 20% of pharmacies in Australia that links doctor prescriptions and OTC purchase information. Pharmacy purchases of at least one prescription or OTC rhinitis treatment, with or without additional asthma/chronic obstructive pulmonary disease (COPD) therapy, by patients during 2013 and 2014 were assessed. RESULTS: In total, 4,247,193 prescription and OTC rhinitis treatments were purchased from 909 pharmacies over 24 months. The majority of rhinitis therapy transactions were single-therapy purchases without additional asthma/COPD therapy. Of the single therapies purchased, 73% were oral antihistamines (OAHs) and 15% were INCS therapy. Dual-therapy purchases of INCSs and OAHs accounted for 40% of multiple-therapy purchases. Patients frequently purchased OAHs, nonsteroidal nasal sprays, and eye drops for allergic conjunctivitis alongside INCSs, resulting in higher financial costs (up to AU$21 per treatment episode) compared with INCS monotherapy. CONCLUSION: This study highlighted the significant burden posed on community pharmacy to address the needs of people with rhinitis symptoms, and the failure to translate the evidence that INCSs are the most effective monotherapy for moderate to severe and/or persistent rhinitis into clinical practice in light of the lack of evidence supporting combination of INCS and OAH therapy. Health care professional engagement, especially at the pharmacy level, will be extremely important if we wish to ensure that the purchase of rhinitis treatment is in accordance with guidelines and that their use is optimal.
