Table 5.

Mediational analyses linking race/ethnicity to wake after sleep onset (WASO) in Black and Hispanic compared with white postmenopausal women

	Race to mediator (path a)	Mediator to WASO (path b)	Total effect (path c)	Direct effect (path c′)	Indirect effect (95% CI)
Black/white
No. health problems	0.595 (0.104)****	0.119 (0.040)***	0.696 (0.118)****	0.625 (0.120)****	0.071 (0.022, 0.129)
Waist circumference	0.321 (0.056)****	0.193 (0.074)***	0.699 (0.118)****	0.637 (0.120)****	0.062 (0.014, 0.118)
Proportion vasomotor symptoms	0.049 (0.018)***	0.709 (0.226)***	0.696 (0.118)****	0.661 (0.118)****	0.035 (0.005, 0.079)
No. stressors	0.152 (0.063)**	0.162 (0.066)**	0.696 (0.118)****	0.671 (0.118)****	0.025 (0.001, 0.061)
Financial hardship	0.234 (0.035)****	0.390 (0.118)***	0.692 (0.119)****	0.601 (0.122)****	0.091 (0.027, 0.165)
Increasing health problems	0.019 (0.005)****	2.438 (0.835)***	0.696 (0.118)****	0.649 (0.119)****	0.047 (0.011, 0.096)
Hispanic/white
No. health problems	0.822 (0.220)****	0.125 (0.045)***	0.595 (0.240)**	0.492 (0.241)**	0.103 (0.023, 0.214)
Waist circumference	0.498 (0.123)****	0.195 (0.081)**	0.597 (0.240)**	0.500 (0.243)**	0.097 (0.014, 0.205)
Physical activity	−0.530 (0.180)***	−0.149 (0.060)**	0.567 (0.255)**	0.488 (0.256)*	0.079 (0.010, 0.173)
Financial hardship	0.593 (0.070)****	0.479 (0.147)***	0.520 (0.247)**	0.236 (0.260)	0.284 (0.062, 0.558)
Positive affect	−4.395 (1.262)***	−0.014 (0.008)*	0.538 (0.248)**	0.478 (0.250)*	0.061 (−0.015, 0.160)
Increasing health problems	0.041 (0.010)****	2.097 (0.976)**	0.595 (0.240)**	0.510 (0.242)**	0.085 (0.006, 0.189)

Unless otherwise noted, mediators are from the same visit as the sleep protocol; increases refer to the slope of the mediator from baseline to sleep study.

*p < 0.10, **p < 0.05, ***p < 0.01, ****p < 0.001.