Subtopic Deep Dive
Polypharmacy Elderly Outcomes
Research Guide
What is Polypharmacy Elderly Outcomes?
Polypharmacy in elderly outcomes examines associations between multiple medication use and risks including falls, hospitalizations, and mortality in older adults.
Cohort studies quantify dose-response relationships between polypharmacy and adverse events (Pazan and Wehling, 2021). Systematic reviews analyze definitions and intervention effects, with over 3000 citations for key works like Masnoon et al. (2017). Meta-analyses assess deprescribing impacts on mortality (Page et al., 2016).
Why It Matters
Polypharmacy drives 10-20% of hospital admissions in elderly patients via adverse drug reactions (Davies et al., 2009). Deprescribing interventions reduce inappropriate prescribing and mortality risks (Page et al., 2016; Scott et al., 2015). These findings guide pharmacotherapy optimization in aging populations, where multimorbidity affects over 50% of older adults (American Geriatrics Society Expert Panel, 2012). Rankings of interventions improve appropriate polypharmacy use (Rankin et al., 2018).
Key Research Challenges
Lack of Consensus Definitions
No universal polypharmacy threshold exists, complicating prevalence estimates (Masnoon et al., 2017). Reviews highlight 111 definitions across studies (Pazan and Wehling, 2021). Standardization remains unresolved.
Quantifying Outcome Risks
Dose-response links to falls and hospitalizations vary by cohort (Davies et al., 2009). Prospective analyses show ADRs in 14.4% of inpatients, but causality challenges persist (Davies et al., 2009). Multimorbidity confounds attributions.
Effective Deprescribing Trials
Few randomized trials demonstrate mortality benefits from deprescribing (Page et al., 2016). Interventions show feasibility but limited scalability (Scott et al., 2015; Rankin et al., 2018). GP implementation barriers noted in qualitative studies.
Essential Papers
What is polypharmacy? A systematic review of definitions
Nashwa Masnoon, Sepehr Shakib, Lisa Kalisch Ellett et al. · 2017 · BMC Geriatrics · 3.0K citations
Reducing Inappropriate Polypharmacy
Ian Scott, Sarah N. Hilmer, Emily Reeve et al. · 2015 · JAMA Internal Medicine · 1.4K citations
Inappropriate polypharmacy, especially in older people, imposes a substantial burden of adverse drug events, ill health, disability, hospitalization, and even death. The single most important predi...
Adverse Drug Reactions in Hospital In-Patients: A Prospective Analysis of 3695 Patient-Episodes
Emma Davies, Christopher F. Green, Stephen Taylor et al. · 2009 · PLoS ONE · 686 citations
Adverse drug reactions (ADRs) are a major cause of hospital admissions, but recent data on the incidence and clinical characteristics of ADRs which occur following hospital admission, are lacking. ...
Interventions to improve the appropriate use of polypharmacy for older people
Audrey Rankin, Cathal Cadogan, Susan Patterson et al. · 2018 · Cochrane Database of Systematic Reviews · 488 citations
BACKGROUND: Inappropriate polypharmacy is a particular concern in older people and is associated with negative health outcomes. Choosing the best interventions to improve appropriate polypharmacy i...
The feasibility and effect of deprescribing in older adults on mortality and health: a systematic review and meta‐analysis
Amy Page, Rhonda Clifford, Kathleen N. Potter et al. · 2016 · British Journal of Clinical Pharmacology · 460 citations
Aims Deprescribing is a suggested intervention to reverse the potential iatrogenic harms of inappropriate polypharmacy. The review aimed to determine whether or not deprescribing is a safe, effecti...
Polypharmacy: Misleading, but manageable
Reamer L. Bushardt · 2008 · Clinical Interventions in Aging · 435 citations
The percentage of the population described as elderly is growing, and a higher prevalence of multiple, chronic disease states must be managed concurrently. Healthcare practitioners must appropriate...
Polypharmacy in older adults: a narrative review of definitions, epidemiology and consequences
Farhad Pazan, Martin Wehling · 2021 · European Geriatric Medicine · 422 citations
Abstract Background The number of older adults has been constantly growing around the globe. Consequently, multimorbidity and related polypharmacy have become an increasing problem. In the absence ...
Reading Guide
Foundational Papers
Start with Davies et al. (2009) for ADR incidence in inpatients (686 citations); Bushardt (2008) for polypharmacy management basics (435 citations); Singh and Bajorek (2014) on defining elderly in guidelines (300 citations).
Recent Advances
Pazan and Wehling (2021) reviews epidemiology (422 citations); Rankin et al. (2018) on interventions (488 citations); Page et al. (2016) deprescribing meta-analysis (460 citations).
Core Methods
Systematic reviews of definitions (Masnoon et al., 2017); prospective ADR surveillance (Davies et al., 2009); Cochrane intervention analyses (Rankin et al., 2018); meta-analyses of deprescribing RCTs (Page et al., 2016).
How PapersFlow Helps You Research Polypharmacy Elderly Outcomes
Discover & Search
Research Agent uses searchPapers and exaSearch to find 250M+ OpenAlex papers on polypharmacy definitions, returning Masnoon et al. (2017) as top-cited. citationGraph visualizes Scott et al. (2015) connections to Rankin et al. (2018) interventions. findSimilarPapers expands to Page et al. (2016) deprescribing meta-analyses.
Analyze & Verify
Analysis Agent applies readPaperContent to extract ADR incidence from Davies et al. (2009), then verifyResponse with CoVe for claim accuracy. runPythonAnalysis processes cohort data for dose-response stats using pandas. GRADE grading assesses evidence quality in Rankin et al. (2018) Cochrane review.
Synthesize & Write
Synthesis Agent detects gaps in deprescribing trial scalability from Page et al. (2016) and Scott et al. (2015). Writing Agent uses latexEditText, latexSyncCitations for review drafts, and latexCompile for publication-ready PDFs. exportMermaid generates flowcharts of intervention outcomes.
Use Cases
"Extract prevalence data from polypharmacy cohorts and plot dose-response curves."
Research Agent → searchPapers → Analysis Agent → readPaperContent (Pazan 2021) → runPythonAnalysis (pandas plot of risks) → matplotlib figure of outcomes.
"Draft a systematic review on deprescribing effects in elderly with citations."
Synthesis Agent → gap detection → Writing Agent → latexEditText (intro/methods) → latexSyncCitations (Scott 2015, Page 2016) → latexCompile → PDF export.
"Find GitHub repos analyzing polypharmacy ADR datasets."
Research Agent → citationGraph (Davies 2009) → Code Discovery → paperExtractUrls → paperFindGithubRepo → githubRepoInspect → Python scripts for replication.
Automated Workflows
Deep Research workflow conducts systematic reviews by chaining searchPapers on 50+ polypharmacy papers, producing GRADE-assessed reports on outcomes (e.g., Masnoon 2017 to Rankin 2018). DeepScan applies 7-step verification to meta-analyses like Page et al. (2016), checkpointing ADR causality. Theorizer generates hypotheses on deprescribing thresholds from Bushardt (2008) epidemiology.
Frequently Asked Questions
What defines polypharmacy in elderly studies?
Masnoon et al. (2017) systematic review identifies 111 definitions, with 5+ medications as common threshold (3035 citations).
What methods assess polypharmacy outcomes?
Prospective cohort analyses track ADRs (Davies et al., 2009); meta-analyses evaluate deprescribing (Page et al., 2016; Rankin et al., 2018).
What are key papers on this topic?
Top-cited: Masnoon et al. (2017, 3035 cites) on definitions; Scott et al. (2015, 1421 cites) on reducing inappropriate polypharmacy; Davies et al. (2009, 686 cites) on hospital ADRs.
What open problems exist?
Consensus on definitions lacking (Pazan and Wehling, 2021); scalable deprescribing trials needed (Page et al., 2016); elderly definition in guidelines inconsistent (Singh and Bajorek, 2014).
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