Table 4.

Analysis of factors associated with tobacco use among patients with SMI.

Variable	b	SE	Wald	OR	95%CI	P-value
Male	2.307	0.222	108.003	10.041	6.499~15.513	<0.001
Han Chinese	1.183	0.577	4.204	3.263	1.053~10.108	0.04
Worse economic status	0.932	0.295	9.976	2.540	1.424~4.529	0.002
Household smoking exposure	1.868	0.219	72.468	6.474	4.211~9.952	<0.001
Outpatients	0.83	0.24	11.951	2.294	1.433~3.674	<0.001
Positive family history of mental illness	0.563	0.225	6.247	1.756	1.129~2.731	0.012
Substance use	0.73	0.261	7.828	2.074	1.244~3.458	0.005
Alcohol use	1.652	0.276	35.805	5.216	3.037~8.960	<0.001
Comorbid oral disease	0.298	0.219	1.857	1.347	0.878~2.069	0.173
Comorbid lung disease	0.166	0.233	0.506	1.181	0.747~1.865	0.477
Comorbid cerebrovascular disease	0.309	0.284	1.185	1.363	0.781~2.378	0.276
Age (years)a
40-59	0.236	0.289	0.664	1.266	0.193~1.779	0.415
≥60	0.257	0.402	0.409	1.293	0.240~1.362	0.523
Marital statusb
Unmarried	0.1	0.264	0.145	1.106	0.659~1.855	0.704
Divorced/widowed	-0.089	0.327	0.075	0.914	0.482~1.735	0.784
Occupationc
Unemployed	0.063	0.345	0.033	1.065	0.542~2.092	0.856
Employed	0.031	0.383	0.007	1.032	0.487~2.186	0.935
Disease duration (years)d
1-5	0.703	0.492	2.035	2.019	0.769~5.301	0.154
6-10	0.033	0.451	0.005	1.034	0.427~2.502	0.942
>10	-0.12	0.401	0.09	0.887	0.404~1.945	0.764

Model fit: Hosmer-Lemeshow P = 0.756.

^arefers to 18–39 years of age; ^brefers to married; ^crefers to retired; and ^drefers to <1 year as the reference variable.

b, Regression coefficient; SE, Standard Error; Wald, Wald Test; OR, Odds Ratio; CI, Confidence Interval.