Table 3.

Screening, rate ratio (95% CI), p-value

	Screening				Screening positive
	Rate ratio	95%CI		P-value	Rate ratio	95%CI		P-value
Year
2011	Reference				Reference
2013	0.96	0.91	1.02	0.1781	0.74	0.42	1.30	0.2876
2016	1.00	0.95	1.05	0.9242	0.69	0.38	1.27	0.2329
Regions
Hokkaido, Tohoku	1.20	1.04	1.37	0.0119	0.21	0.13	0.33	<.0001
Kanto	0.55	0.48	0.62	<.0001	0.30	0.17	0.52	<.0001
Chubu, Tokai	0.77	0.68	0.87	<.0001	0.43	0.17	1.06	0.0670
Kinki	0.89	0.79	1.02	0.0928	0.54	0.25	1.16	0.1142
Chugoku, Shikoku	1.33	1.15	1.53	0.0001	0.22	0.14	0.35	<.0001
Kyusyu, Okinawa	Reference				Reference
Units
High-volume hospital	1.18	1.11	1.26	<.0001	1.56	1.02	2.38	0.0386
Middle- and low-volume hospitals and clinics	Reference