Table 3.

Univariable Cox regression survival analyses.

	β	p	HR	95% CI
Age	0.002	0.817	1.002	(0.984–1.021)
BMI	−0.026	0.436	0.974	(0.912–1.040)
CES-D	0.037	0.001	1.038	(1.014–1.061)
Sleep latency	−0.002	0.609	0.998	(0.992–1.005)
Sleep efficiency	−0.001	0.911	0.999	(0.988–1.011)
Sleep duration (curvilinear)
Sleep duration: Linear term	−0.493	0.049	0.611	(0.374–0.997)
Sleep duration: Quadratic term	0.041	0.050	1.042	(1.000–1.085)

BMI, body mass index; CES-D, Center for Epidemiological Studies Depression Scale; CI, confidence interval; HR, hazard ratio.