Abstract
Background and AimsUnder‐prescription is defined as the exclusion of medications indicated for the treatment of certain conditions without any rationale for not prescribing them. The under‐prescription of medications is highly prevalent among older adults (≥65 years) receiving polypharmacy. This study aimed to assess the prevalence of the under‐prescription of medications using the Screening Tool to Alert to Right Treatment (START) criteria version 2 and to identify the predictors of having potential prescribing omissions (PPOs).MethodsThis cross‐sectional, face‐to‐face interview study was carried out between September 2021 and February 2022. The study comprised community‐dwelling older adults taking at least one medication on a regular basis. The study questionnaire included the patients' demographics, clinical data, and comorbidities. PPOs were identified using the START criteria. The χ 2 test was used to assess the association between under‐prescription of medication and the demographic/clinical variables. Multivariable logistic regression was performed to explore factors associated with under‐prescription of medications as the dependent variable and taking all variables that showed a p < 0.05 in the bivariate analysis as independent.ResultsA total of 444 older adults agreed to participate in this study. The mean age of participants was 71 ± 8.6; the majority of them, 305 (68.7%), were men. Polypharmacy was present in 261 patients (58.8%) and underprescribing of medications in 260 patients (58.6%). The highest percentage of under‐prescribing of medications was reported with statins in 115 patients (44.2%) followed by aspirin in 93 (35.7%), and angiotensin‐converting enzyme inhibitors in 61 (23.4%). The results of the multivariable analysis showed that patients with underprescribed medications had higher odds of polypharmacy (odds ratio [OR]: 2.015, confidence interval [CI] 95% 1.362–2.980, p < 0.001) and higher Charlson Comorbidity Index (OR 2.807, CI 95% 1.463–5.85, p = 0.02).ConclusionThe present findings highlight that PPOs are highly prevalent among community‐dwelling older adults in Lebanon. Multimorbidity and polypharmacy were the identified predictors for under‐prescription of medications in this population.
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