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  • Title: Drugs and falls in older people: a systematic review and meta-analysis: II. Cardiac and analgesic drugs.
    Author: Leipzig RM, Cumming RG, Tinetti ME.
    Journal: J Am Geriatr Soc; 1999 Jan; 47(1):40-50. PubMed ID: 9920228.
    Abstract:
    OBJECTIVES: To evaluate critically the evidence linking specific classes of cardiac and analgesic drugs to falls in older people. DESIGN: Fixed-effects meta-analysis. DATA SOURCES: English-language articles in MEDLINE (1966 - March 1996) indexed under accidents or accidental falls and aged or age factors; bibliographies of retrieved papers. STUDY SELECTION: Systematic evaluation of cardiac or analgesic drug use and any fall in people aged 60 years and older. DATA EXTRACTION: Study design, inclusion and exclusion criteria, setting, sample size, response rate, mean age, method of medication verification and fall assessment, fall definition, and the number of fallers and nonfallers taking specific classes of cardiac and analgesic drugs. RESULTS: Twenty nine studies met inclusion criteria. None were randomized controlled trials. For one or more falls, the pooled Odds Ratio (95% Confidence Interval) was 1.08 (1.02-1.16) for diuretic use, 1.06 (0.97-1.16) for thiazide diuretics, 0.90 (0.73-1.12) for loop diuretics, 0.93 (0.77-1.11) for beta-blockers, 1.16 (0.87-1.55) for centrally acting antihypertensives, 1.20 (0.92-1.58) for ACE inhibitors, 0.94 (0.77-1.14) for calcium channel blockers, 1.13 (0.95-1.36) for nitrates, 1.59 (1.02-2.48) for type Ia antiarrhythmics, and 1.22 (1.05-1.42) for digoxin use. For analgesic drugs, the pooled OR was 0.97 (0.78-1.20) for narcotic use, 1.09 (0.88-1.34) for nonnarcotic analgesic use, 1.16 (0.97-1.38) for NSAID use, and 1.12 (0.80-1.57) for aspirin use. There was no statistically significant heterogeneity of pooled odds ratios. There were no differences between the pooled odds ratios for studies with mean subject age <75 versus > or =75 years old or for studies in communities with <35% versus > or =35% fallers. In studies of the relationship between psychotropic, cardiac, or analgesic drugs and falls, subjects reporting the use of more than three or four medications of any type were at increased risk of recurrent falls. CONCLUSION: Digoxin, type IA antiarrhythmic, and diuretic use are associated weakly with falls in older adults. No association was found for the other classes of cardiac or analgesic drugs examined. The evidence to date, however, is based solely on observational data, with minimal adjustment for confounders, dosage, or duration of therapy. Older adults taking more than three or four medications were at increased risk of recurrent falls. As a result of the incidence of falls and their consequences in this population, programs designed to decrease medication use should be evaluated for their impact on fall rates.
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