Table 4.

Associations of Standardized Physical Performance Scores With Subsequent Institutionalization Stratified by Positive Psychological Characteristics

Stratified by	OR of institutionalization per 1 SD increase in physical performance score (95% CI)
	N	Model 1	Model 2	Model 3
Mastery
Below median (0–12)	585	0.28 (0.12–0.65)	0.43 (0.17–1.08)	0.53 (0.21–1.36)
Above median (13–20)	859	0.63 (0.26–1.52)	0.53 (0.19–1.49)	0.49 (0.16–1.53)
p Value		.08	.09	.10
Self-efficacy
Below median (22–42)	654	0.47 (0.25–0.89)	0.60 (0.28–1.25)	0.63 (0.30–1.33)
Above median (43–60)	793	0.30 (0.10–0.89)	0.48 (0.12–2.00)	0.49 (0.11–2.19)
p Value		.58	.62	.60
Investment in independence
Below median (0–42)	633	0.37 (0.13–1.06)	0.50 (0.16–1.58)	0.50 (0.15–1.61)
Above median (43–56)	755	0.57 (0.29–1.15)	0.51 (0.22–1.20)	0.52 (0.21–1.28)
p Value		.32	.34	.34

Notes: Model 1: Adjusted for age and gender. Model 2: Model 1 plus indicators of baseline health status (number of chronic conditions and functional limitations score). Model 3: Model 2 plus education and partner status. p Values from likelihood ratio tests of interaction. CI = confidence interval; OR = odds ratio.