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BACKGROUND: The question whether patients actually start drug taking after having received a first antidepressant prescription is often overlooked. AIM: To determine the incidence of patients who do not fill or fill only a single antidepressant prescription at the pharmacy, and to identify associated patient characteristics. DESIGN OF STUDY: Retrospective study linking a general practice to a pharmacy dispensing database. SETTING: General practice in the Netherlands. STUDY POPULATION: patients who received a first-time antidepressant prescription from a GP. Three patient groups were identified: patients who did not fill the prescription (non-fillers); patients who filled only a single prescription (single Rx-fillers); and patients who filled at least two consecutive prescriptions. Non-fillers and single Rx-fillers were combined into a group of decliners. RESULTS: Of all 965 patients, 41 (4.2%) did not fill the prescription, and 229 (23.7%) filled only a single prescription. Patients who consulted their GP for a non-specific indication, rather than for depression, anxiety, panic, or obsessive-compulsive disorder, were almost three times more likely (odds ratio OR = 2.7, 95% confidence interval CI = 1.8 to 3.9) to decline treatment. Further, the risk of declining was almost fivefold higher (OR = 4.8, 95% CI = 2.1 to 11.3) in non-Western immigrants, and almost twofold higher (OR = 1.8, 95% CI = 1.2 to 2.8) in patients >60 years of age. CONCLUSION: Over one in four patients who receive a first-time antidepressant prescription decline treatment; they either do not initiate drug taking or do not persist with antidepressant use for longer than 2 weeks.
Geffen et al. (Sat,) studied this question.