Prevalence and Associated Factors of Drug-Related Problems Among Older People: A Cross-Sectional Study at King Chulalong
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ORIGINAL RESEARCH ARTICLE
Prevalence and Associated Factors of Drug‑Related Problems Among Older People: A Cross‑Sectional Study at King Chulalongkorn Memorial Hospital in Bangkok Annie Paisansirikul1 · Armeena Ketprayoon1 · Wannee Ittiwattanakul1 · Aisawan Petchlorlian2,3 Accepted: 30 October 2020 © The Author(s) 2020
Abstract Background and Objective The use of multiple medications and altered pharmacokinetics/pharmacodynamics may lead to drug-related problems in members of the older population. The aim of this study is to evaluate the prevalence of, and factors related to, drug-related problems in older urban-living Thai people. Methods We conducted a cross-sectional study involving 466 participants (aged ≥ 65 years) whose first-time health screening at the Geriatric Excellence Center, King Chulalongkorn Memorial Hospital, Bangkok was between May and October 2019. Participants were interviewed and assessed for drug-related problems by clinical pharmacists. Results In total, 54.5% (254) of the participants were aged 65–69 years and 77.0% (359) of the participants were women. Of the participants, 56.7% had three or more health conditions such as hyperlipidemia (62%), hypertension (46%), and cataract (18%). Fifty-five percent of the participants took five or more health products (polypharmacy) and 16% took ten or more products on a regular basis. Of the 2633 products used, 68% were prescription drugs and 32% were over-the-counter products. The prevalence of drug-related problems according to the criteria suggested by Cipolle–Strand–Morley (2012) was 63.3% (587 drug-related problems). Most of the problems came from: (a) non-adherence (28.6%); (b) needs for additional drug therapy (26.4%); and (c) adverse drug reactions (17.4%). Factors associated with drug-related problems were polypharmacy (odds ratio 2.50, 95% confidence interval 1.60–3.89) and multiple comorbidities [three or more conditions] (odds ratio 2.20, 95% confidence interval 1.41–3.43). Conclusions The prevalence of drug-related problems in urban-living older people at King Chulalongkorn Memorial Hospital in Bangkok was high. Polypharmacy and multiple comorbidities were significantly related to drug-related problems. To decrease the number of drug-related problems, pharmacists should collaborate with healthcare teams and suggest how to correctly reduce the number of health products being consumed by older people. Electronic supplementary material The online version of this article (https://doi.org/10.1007/s40801-020-00219-2) contains supplementary material, which is available to authorized users. * Annie Paisansirikul [email protected] 1
Pharmacy Department, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, 1873 Rama IV Rd, Pathum Wan, Pathum Wan District, Bangkok 10330, Thailand
2
Division of Geriatric Medicine, Department of Medicine, Faculty of Medicine, Chulalongkorn University, 1873 Rama IV Rd, Pathum Wan, Pathum Wan District, Bangkok 10330, Thailand
3
Geriatric Excellence Center, King Chulalongkorn Memoria
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