TABLE 4.

ASSOCIATIONS OF RESPIRATORY FUNCTION, LEG STRENGTH AND DEMOGRAPHICS

Variable	Sex*	Age†	Education†
Pulmonary function	−15.91 (298), P < 0.001	−0.31‡	0.21‡
Respiratory muscle strength	−12.01 (321), P < 0.001	−0.26‡	0.14‡
Leg strength	−6.06 (341), P < 0.001	−0.21‡	0.10§

^*From t tests comparing the means for women to those of men for each variable.

^†Pearson correlation.

^‡P < 0.001.

^§P < 0.01.