Table 3.

Estimated class-specific covariates coefficients and related z-statistics and p values

Variable	Coefficients	z value (p value)	Odds ratio	95% CL
Class 2 (ref=Class 1)
Age	-0.02	-2.79 (0.005)	0.97	0.96-0.98
Sex (ref=women)	0.31	4.6 7(0.025)	1.36	1.04-0.77
Marital status (ref=unmarried)	-0.62	-3.73 (0.00)	0.54	0.39-0.75
Level of education	-0.76	-8.56 (0.00)	0.47	0.39-0.55
Family history (ref=without)	-0.28	-1.70 (0.089)	0.76	0.55-1.04
Smoking (ref=non-smoker)	0.16	0.98 (0.33)	1.18	0.85-1.63
Alcohol drinking (Ref=non-drinker)	0.21	1.97 (0.048)	1.23	1.03-1.53
Class 3 (ref=Class 1)
Age	-0.002	-0.18 (0.85)	0.98	0.99-1.00
Sex (ref=women)	0.91	-5.71 (0.00)	2.47	1.81-3.37
Marital status (ref=unmarried)	-0.69	-3.43 (0.001)	0.50	0.34-0.75
Level of education	-1.21	-11.62 (0.00)	0.30	0.24-0.37
Family history (ref=without)	-0.35	-1.49 (0.091)	0.70	0.44-1.12
Smoking (ref=non-smoker)	-0.57	-4.83 (0.00)	0.57	0.39-0.82
Alcohol drinking (ref=non-drinker)	0.29	2.69 (0.007)	1.33	1.11-1.55

CI=Confidence interval;

ref=Reference category