ArticleClinical drug investigation2024
Drug-Drug Interactions and Their Association with Adverse Health Outcomes in the Older Community-Dwelling Population: A Prospective Cohort Study.
Article in Clinical drug investigation, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Prescription and Non-prescription Medication Pill Burdens and Their Associations with Health-Related Quality of Life in Older Adults: A Cross-Sectional Study.Drugs & aging · 2025Trial
- Potential Drug-Drug Interactions in Patients Undergoing Hemodialysis:Saudi medical journal · 2026Observational
- Potentially Clinically Significant Drug-Drug Interactions in Older Adults with Atrial Fibrillation and Multimorbidity: Prevalence, Correlates, and Association with Adverse Clinical Outcomes in a Swedish National Register-Based Study.Cardiovascular drugs and therapy · 2026Article
- Prescribing Practices, Polypharmacy, and Drug Interaction Risks in Anticoagulant Therapy: Insights from a Secondary Care Hospital.Journal of clinical medicine · 2026Article
- Exploratory prescribing risk profiles and drug drug interaction burden in older adults with depressive episodes.Frontiers in psychiatry · 2026Article
- Drug-drug interactions in targeted cancer therapies: a focus on tyrosine kinase inhibitors.Expert review of clinical pharmacology · 2025Review
- Trends in drug-drug interaction prevalence and longitudinal associations with health outcomes in the older community-dwelling population: Findings from The Irish LongituDinal study on Ageing.British journal of clinical pharmacology · 2025Article
- Impact of Pharmacist-Led Anti-Infective Consultations on Therapeutic Outcomes: A Retrospective Cohort Study in a Tertiary Hospital.Infection and drug resistance · 2025Article
Corrections and comments
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Authors and funding
3 authors.
Funding
Abstract
backgroundEvidence on associations between drug-drug interactions (DDIs) and health outcomes in the older community-dwelling population is limited.
objectiveWe estimate potentially clinically important DDI prevalence and examine the association between DDIs and (1) adverse drug events (ADEs), (2) emergency hospital attendance and (3) health-related quality of life (HRQoL) in an older community-dwelling population in Ireland.
methodsThis is a prospective cohort study of community-dwelling older adults (N = 904) aged ≥ 70 years from 15 general practices in Ireland recruited in 2010 (wave-1) and followed-up over 2 years (wave-2; 2012-2013), with linked national pharmacy claims data. Individuals dispensed two or more drugs (wave-1: N = 842; wave-2: N = 763) were included. DDI prevalence at baseline, follow-up and 6 months prior to each health outcome was estimated. Multi-level regression was used to model the association between DDI-exposure and health outcomes at follow-up. DDI prevalence, adjusted incidence-rate ratios (aIRR), adjusted odds ratios (aOR), β coefficients and robust standard error (RSE) from multi-level regression analyses, and 95% confidence intervals (CIs) are reported.
resultsAt wave-1, n = 196 (23.3% [95% CI 20.5-26.3]), individuals were potentially exposed to ≥ 1 DDI, increasing to n = 345 (45.2% [41.7-48.9]) at wave-2. At 2-year follow-up, the median number of ADEs was 3 (interquartile range [IQR 2-5]); 229 (30.1%) had ≥ 1 emergency hospital attendance, and the mean EQ-5D was 0.74 (± 0.23). Evidence for the association between DDI-exposure and emergency hospital attendance at follow-up was lacking (aOR = 1.38 [0.42-4.53]). DDI-exposure was associated with an increasing number of ADEs (aIRR = 1.26 [1.03-1.55]), and decreasing EQ-5D utility (β = - 0.07, [-0.11 to -0.04], RSE = 0.02). Aspirin-warfarin, clarithromycin-prednisolone, amiodarone-furosemide, clarithromycin-salbutamol, rosuvastatin-warfarin, amiodarone-bisoprolol, and aspirin-nicorandil were common DDIs 6 months preceding these health outcomes.
conclusionsWe found a two-fold increase in DDI prevalence between wave 1 and 2. DDI exposure was associated with increasing ADEs and declining HRQoL at 2-year follow-up. Common DDIs involved anticoagulants, cardiovascular and antimicrobial drugs, which should be targeted for medicine optimisation.
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