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. Author manuscript; available in PMC: 2009 Dec 14.
Published in final edited form as: J Am Geriatr Soc. 2009 Jul 21;57(9):1532–1539. doi: 10.1111/j.1532-5415.2009.02394.x

Table 3.

Hazard ratios and 95% confidence intervals estimating the association between frailty (two indexes) and recurrent falls. Indicator (dummy) variables represent pre-frail and frail groups relative to robust.

Risk of Recurrent Falls
SOF Frailty Index (N=765) CHS Frailty Index (N=760)
Hazard Ratio CI 95% P-value Hazard Ratio CI 95% P-value
Unadjusted
Pre-frail 1.43 1.04-1.95 .03 1.06 0.80-1.40 .71
Frail 1.55 0.88-2.72 .13 1.61 1.09-2.39 .02
Adjusted
Pre-frail 1.62 1.14-2.32 .008 1.10 0.80-1.50 .57
Frail 2.19 1.19-4.03 .01 1.90 1.17-3.10 .01

SOF = Study of Osteoporotic Fractures (Ensrud et al., 2008)

CHS = Cardiovascular Health Study (Fried et al., 2001)

CI = confidence interval

Adjusted for age, gender, race, diabetes, stroke, hypertension, hyperlipidemia, education and income.