Is adjustment for reporting heterogeneity necessary in sleep disorders? results from the Japanese World Health Survey

Table 3 Estimated regression coefficients of socio-demographic variables on self-reported sleep and energy before and after correcting for heterogeneity (N = 1002)

	Before correction		After correction
	(Ordered probit model)		(CHOPIT model)
	β	p value	β	p value
Age (years)	0.010	0.00	0.008	0.01
Women (vs. men)	0.161	0.05	0.107	0.27
Years of schooling	0.001	0.97	−0.026	0.16
Number of morbidities (reference: none)
One	0.137	0.14	0.127	0.20
Two	0.646	0.00	0.650	0.00
Three or more	0.808	0.00	0.847	0.00
No regular exercise (vs. regular exercise)	0.104	0.16	0.194	0.03
Smoker (vs. non-smoker)	0.011	0.91	0.042	0.70
Alcohol consumer (vs. non-alcoholic)	0.108	0.32	0.082	0.53