Table 4.

Associations between sleep habits and change in weight and body composition in response to 52-weeks weight loss maintenance

	Objective sleep duration (h/night)	PSQI global score	Sleep efficiency score	Perceived sleep quality score	Daily disturbances score
	β (95% CI)	β (95% CI)	β (95% CI)	β (95% CI)	β (95% CI)
∆ Body weight, kg	−1.69 (−3.55 to 0.16)	0.46 (0.00 to 0.93)	0.81 (−0.21 to 1.83)	0.66 (−0.27 to 1.60)	1.26 (−0.25 to 2.77)
∆ Fat percentage, %-points	−0.80 (−1.50 to −0.10)	0.16 (-0.02 to 0.35)	0.19 (−0.21 to 0.60)	0.32 (−0.05 to 0.69)	0.39 (−0.22 to 0.99)

Data are presented as unstandardized regression coefficients (β) (95% CI). Values in boldface indicate statistically significance. Sleep values were measured after the low-calorie diet at randomization. Objective sleep duration was measured by wrist-worn accelerometer. A negative regression coefficient means more weight/fat percentage reduction with longer sleep duration. PSQI global score, sleep efficiency, perceived sleep quality, and daily disturbances were all derived from the PSQI. Higher scores indicate worse sleep quality. Thus, a positive regression coefficient means more weight/fat percentage increase with worse sleep quality.