Table 3.

Stepwise regression analysis assessing which fitness components were independently associated with health-related quality of life in early postmenopausal women

	β	B	SE	P	R 2	R 2 change	P
SF-36 physical component summary
Step 1					0.032		0.573
Age	0.145	0.742	0.649	0.258
Educational status	0.126	3.040	3.200	0.345
Occupational status	−0.038	−0.909	3.129	0.773
Step 2					0.290	0.258	<0.001
Age	0.152	0.777	0.561	0.172
Educational status	−0.064	−0.002	2.838	0.982
Occupational status	0.004	0.096	2.711	0.972
Chair sit-and-reach	0.523	0.988	0.212	<0.001
Step 3					0.349	0.059	<0.001
Age	0.151	0.773	0.542	0.159
Educational status	0.001	0.027	2.741	0.992
Occupational status	−0.020	−0.474	2.630	0.858
Chair sit-and-reach	0.377	0.713	0.236	0.004
Handgrip strength	0.283	−13.313	0.598	0.025
SF-36 mental component summary
Step 1					0.275		0.643
Age	0.108	0.480	0.480	0.401
Educational status	0.129	2.704	2.794	0.337
Occupational status	−0.091	2.737	−1.885	0.493
Step 2					0.194	0.167	0.011
Age	0.109	0.488	0.522	0.350
Educational status	0.082	1.724	2.580	0.507
Occupational status	−0.109	−2.254	2.514	0.374
Handgrip strength	0.412	1.750	0.497	0.001
Step 3					0.266	0.072	0.002
Age	0.165	0.739	0.513	0.155
Educational status	−0.034	−0.719	2.685	0.790
Occupational status	−0.059	−1.216	2.459	0.623
Handgrip strength	0.361	1.533	0.487	0.003
6-min walk	0.304	0.125	0.052	0.020

SF-36 Short-Form Health Survey-36, SE standard error, CI confidence interval, β standardized regression coefficient, B nonstandardized regression coefficient, R ² adjusted coefficient of determination, expressing the percent variability of the dependent variable explained by each model, R ² change, additional percent variability explained by the model due to the inclusion of the new term