Table 3.

Effective factors for promoting participation in gastric cancer screening

	40–49 years				50–59 years				60–69 years				≥ 70 years
	Marginal effect	95%CI		P-value	Marginal effect	95%CI		P-value	Marginal effect	95%CI		P-value	Marginal effect	95%CI		P-value
Personal invitation letters	0.050	0.017	0.084	0.003	0.053	0.018	0.089	0.003	0.057	0.017	0.098	0.006	0.045	0.011	0.080	0.010
Household invitation letters	0.056	0.018	0.095	0.004	0.060	0.020	0.100	0.004	0.078	0.031	0.124	0.001	0.044	0.004	0.084	0.030
Home visits by community nurses	0.079	0.019	0.138	0.010	0.091	0.029	0.153	0.004	0.097	0.021	0.172	0.012	0.084	0.024	0.144	0.006
Screenings at medical offices	−0.012	−0.045	0.021	0.484	−0.015	−0.050	0.020	0.401	−0.010	− 0.050	0.030	0.614	0.000	−0.034	0.034	0.998
Free screenings for all age groups	0.050	−0.005	0.105	0.073	0.037	−0.022	0.097	0.222	0.027	−0.044	0.098	0.456	0.006	−0.054	0.066	0.842
Total number of municipalities	1639				1639				1639				1639
Log likelihood	− 457.97				− 490.82				− 595.76				− 472.63
AIC	0.5698				0.6099				0.738				0.5877

Adjusted by total population (≥ 30,000 or < 30,000), total number of medical facilities per 1000 individuals aged 40 years and older, and proportion of women

Boldface indicates statistical significance at P < 0.05