Table 3.

Adjusted Results Associated with Fall-related Injuries^*

	Incidence Rate Ratio (IRR) and 95% Confidence Interval
	12 months	24 months
Intervention group	1.27 (0.93–1.73)	1.18 (0.93–1.49)
Age (per additional decade)	1.27 (1.00–1.62)	1.41 (1.17–1.70)
Female	1.20 (0.88–1.64)	1.16 (0.92–1.47)
Claims-based Elixhauser comorbidity score (per additional comorbidity)	1.09 (1.04–1.15)	1.11 (1.07–1.15)
Claim for fall-related injury in pre-intervention period	1.44 (1.05–1.97)	1.38 (1.08–1.77)
Responses to screening questions
≥2 falls in the past year	1.59 (1.20–2.11)	1.61 (1.30–2.00)
Fall with injury since last visit to MD	1.84 (1.37–2.46)	1.42 (1.12–1.79)
Fear of falling due to balance or walking problems	0.98 (0.70–1.37)	1.09 (0.82–1.43)
Site**
Site B	0.88 (0.59–1.33)	0.97 (0.72–1.32)
Site C	0.69 (0.43–1.10)	0.61 (0.42–0.89)
Site D	0.66 (0.44–0.99)	0.62 (0.45–0.84)

Time zero represents the start date of the intervention at each site.

^*Also adjusted with dichotomous variable for presence of missing claims data in the pre-intervention period.

^**Site A is reference group