Table 2.

Outcome of generalized linear model.

	IRR	Robust Std. Err.	Z	P	95% CI
Age
60–69	1.00 (base)
70–79	1.56	0.10	6.8	<0.001	(1.37, 1.77)
≥80	2.53	0.30	7.89	<0.001	(2.01, 3.18)
Gender
Male	1.00 (base)
Female	1.34	0.08	5.13	<0.001	(1.20, 1.50)
Minzu
Han	1.00 (base)
Minority	1.28	0.11	2.9	0.004	(1.08, 1.51)
Education level
Diploma or above	1.00 (base)
High school	1.17	0.22	0.84	0.403	(0.81, 1.68)
Middle school	1.23	0.22	1.2	0.230	(0.88, 1.74)
Primary school or below	1.81	0.31	3.48	0.001	(1.30, 2.54)
Marital status
Widowed	1.00 (base)
Divorced	0.81	0.19	−0.87	0.383	(0.51, 1.29)
Unmarried	0.87	0.20	−0.61	0.544	(0.56, 1.36)
Married	1.03	0.08	0.4	0.687	(0.89, 1.20)
Migrating regions
Within city	1.00 (base)
Cross-city	0.94	0.06	−0.83	0.404	(0.83, 1.08)
Cross-province	0.8	0.06	−3.21	0.001	(0.69, 0.91)
Monthly income (Yuan)
≥7801	1.00 (base)
4501-7800	1.26	0.13	2.18	0.029	(1.02, 1.55)
2501-4500	1.53	0.16	4.13	<0.001	(1.25, 1.86)
≤ 2500	2.46	0.24	9.32	<0.001	(2.04, 2.97)
Health records
Yes	1.00 (base)
No	0.9	0.07	−1.39	0.165	(0.78, 1.04)
Unclear	1.0	0.12	0.01	0.991	(0.8, 1.26)
Family doctor service contracts
Yes	1.00 (base)
No	0.97	0.08	−0.41	0.680	(0.82, 1.14)
Unclear	0.81	0.11	−1.59	0.112	(0.62, 1.05)
Health-related education
Yes	1.00 (base)
No	1.47	0.09	6.60	<0.001	(1.31, 1.65)
Medical insurance
Yes	1.00 (base)
No	1.05	0.12	0.43	0.670	(0.84, 1.32)
Unclear	0.75	0.34	−0.62	0.534	(0.31, 1.84)
_cons	0.06	0.01	−13.95	<0.001	(0.04, 0.09)

IRR, incidence rate ratio; Robust Std. Err: Robust standard error; CI, confidence interval.