Evidence map›Paper›PMID 34632551›Full record

ArticleDrugs & aging2021

Prevalence and Factors Associated with Potential Drug-Drug Interactions in Older Community-Dwelling Adults: A Prospective Cohort Study.

John E Hughes, Veronica Russo, Caroline Walsh, Enrica Menditto, Kathleen Bennett, Caitriona Cahir

Open access · hybridAbstract read
In one paragraph

Article in Drugs & aging, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 pooled it
2.8field-weighted citation impact, top 9% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

20 citing papers in PubMed, 1 synthesis or guideline pooled it, 34 citations in OpenAlex.

  1. Pooled it
  2. Drug-Drug Interactions in Nursing Home Residents With vs Without Dementia.Journal of the American Medical Directors Association · 2026
    Observational
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Managing Drug-Drug Interactions in Older Adults.Journal of clinical pharmacology · 2023
    Article
  17. Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 2 countries.

John E Hughes *Division of Population Health Sciences, Royal College of Surgeons in Ireland, Dublin, Ireland. johnehughes@rcsi.com.ORCID 0000-0002-3944-8326
Veronica Russo *Department of Pharmacy, CIRFF, Center of Pharmacoeconomics, University of Naples Federico II, Naples, Italy.
Caroline WalshDivision of Population Health Sciences, Royal College of Surgeons in Ireland, Dublin, Ireland.
Enrica MendittoDepartment of Pharmacy, CIRFF, Center of Pharmacoeconomics, University of Naples Federico II, Naples, Italy.
Kathleen BennettDivision of Population Health Sciences, Royal College of Surgeons in Ireland, Dublin, Ireland.ORCID 0000-0002-2861-7665
Caitriona CahirDivision of Population Health Sciences, Royal College of Surgeons in Ireland, Dublin, Ireland.ORCID 0000-0002-7137-5737
Royal College of Surgeons in Ireland · IEAzienda Sanitaria Locale Roma 3 · ITUniversity of Naples Federico II · IT

Funding

EPA EP-C-17-015
6 · The paper itself

Abstract

backgroundOlder patients are at increased risk of drug-drug interactions (DDIs) due to polypharmacy. Cardiovascular and central nervous system (CNS) drugs are commonly implicated in serious DDIs.

objectivesThis study aimed to determine the prevalence and factors associated with potential 'severe' cardiovascular and CNS DDIs among older (≥ 70 years) community-dwellers.

methodsThis was a prospective cohort study using linked data from a national pharmacy claims database and waves 1 and 2 of The Irish LongituDinal study on Ageing (TILDA). 'Severe' cardiovascular and CNS DDIs were identified using the British National Formulary 77 and Stockley's Drug Interactions. The prevalence of 'severe' DDIs (any DDI vs. none) was calculated. Logistic regression was used to examine the association between sociodemographic, functional ability, and medication-related factors and the risk of DDI exposure between waves 1 and 2.

resultsA total of 1466 patients were included [mean age (standard deviation) = 78 (5.5) years; female n = 795, 54.2%]. In total, 332 community-dwellers aged ≥ 70 years [22.65%, 95% confidence interval (CI) 20.58-24.86] were potentially exposed to at least one 'severe' cardiovascular or CNS DDI, with more than half (54.82%) of this cohort dispensed the same DDI for a prolonged time (≥ 3 consecutive claims). Aspirin-warfarin was the most frequently dispensed (co-prescribed) DDI (n = 34, 10.24%, 95% CI 7.39-14.00), followed by atorvastatin-clarithromycin (n = 19, 5.72%, 95% CI 3.64-8.81). Polypharmacy [≥ 10 vs. < 5 drugs, odds ratio (OR) 13.40, 95% CI 8.22-21.85] and depression (depressed vs. not, OR 2.12, 95% CI 1.34-3.34) were significantly associated with these DDIs, after multivariable adjustment.

conclusion'Severe' cardiovascular and CNS DDIs are prevalent in older community-dwellers in Ireland, and those with polypharmacy and depression are at a significantly increased risk.

Indexed as

Independent LivingPolypharmacyAgedCohort StudiesDrug InteractionsFemaleHumansLongitudinal StudiesMalePrevalenceProspective Studies

Identifiers

PMID34632551
PMCPMC8594274
OpenAlexW3207575702

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.