- Design
- Serial cross-sectional analysis of a national survey (NHANES), 1999–2020
- Population
- 12,766 community-dwelling US adults aged 65 or over with a frailty index
- Primary outcome
- Mean number of prescription medicines by frailty group
- Effect
- Moderate–severe frailty 6.0 to 7.8; mild frailty 3.9 to 5.5; robust 2.0 to 2.9
Researchers used NHANES, a nationally representative US survey, to construct a frailty index for 12,766 community-dwelling adults aged 65 or over between 1999 and March 2020, and counted their prescription medicines.
Medication use rose in every group. Robust adults went from 2.0 to 2.9 medicines on average, the mildly frail from 3.9 to 5.5, and the moderately to severely frail from 6.0 to 7.8. Cardiovascular drugs were the largest share but stable over time; the growth came from metabolic agents, which rose in all groups, and from CNS and psychotropic drugs, which rose mainly in the most frail.
This describes US practice, but the pattern — more drugs piled onto the frailest, many of them sedating or glucose-lowering — is familiar in Indian clinics too, where multiple prescribers and over-the-counter use add to the count.
In practice: frailty should trigger a structured medication review. The highest-yield targets are CNS drugs (benzodiazepines, Z-drugs, antidepressants, antipsychotics), where falls and delirium risk is greatest, and glucose-lowering treatment, where targets can usually be relaxed in frailty to avoid hypoglycaemia.
- Do a structured medication review whenever frailty is identified.
- Review every sedative, antidepressant and antipsychotic in frail older adults for ongoing need.
- Relax glucose targets in frailty and step down treatments that cause hypoglycaemia.
- Ask about medicines from other prescribers and over-the-counter purchases.
- Agree a stopping plan with the patient rather than stopping several drugs at once.
Why it matters
It shows the extra drugs are landing on the people least able to tolerate them.
Don't overread it
Survey data describe medication counts; they cannot show which drugs were inappropriate.
The statistics, in plain English
These are average counts from a weighted national survey, so they describe the population. A rise from 6.0 to 7.8 means nearly two extra prescriptions per frail person in two decades.
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