Table 3.

Independent Risk Factors for Hospitalization^*

(N = 1932)
Risk Factor	Adjusted RR† (95% CI)
Deyo-Charlson score ≥ 2 (n = 759)	1.8 (1.4, 2.2)
Any hospitalization in previous year (n = 434)	1.8 (1.5, 2.3)
Primary care visits ≥ 6 in previous year (n = 796)	1.6 (1.3, 2.0)
Age ≥ 85 (n = 378)	1.4 (1.1, 1.7)
Unmarried (n = 1040 )‡	1.4 (1.1, 1.7)

^*RR=relative risk; CI=confidence interval. n=number of patients with the risk factor present.

^†Adjusted relative risk derived from multivariable models in PROC GENMOD.

^‡_Includes imputed values for 11 missing subjects.