. 2017 May 9;12(5):e0177091. doi: 10.1371/journal.pone.0177091

Table 2. Association of utilization of the annual health check-ups with equivalent income and indices for geographic accessibility using a multilevel mixed-effect logistic regression model.

			Index for accessibility
			Travel time to the nearest facility			Density			2SFCA			E2SFCA with slow decay			E2SFCA with quick decay
			OR	95% CI	p-value	OR	95% CI	p-value	OR	95% CI	p-value	OR	95% CI	p-value	OR	95% CI	p-value
Fixed parameters
Individual factors
	Sex
		Men	1.00			1.00			1.00			1.00			1.00
		Women	1.73	1.68–1.79	<0.001	1.73	1.68–1.79	<0.001	1.73	1.68–1.79	<0.001	1.73	1.68–1.79	<0.001	1.73	1.68–1.79	<0.001
	Age (year)		1.09	1.09–1.09	<0.001	1.09	1.09–1.09	<0.001	1.09	1.09–1.09	<0.001	1.09	1.09–1.09	<0.001	1.09	1.09–1.09	<0.001
Household factors
	Number of family members
		1	1.00			1.00			1.00			1.00			1.00
		2	1.50	1.43–1.58	<0.001	1.50	1.43–1.58	<0.001	1.50	1.43–1.58	<0.001	1.50	1.43–1.58	<0.001	1.50	1.43–1.58	<0.001
		3 or more	1.05	0.99–1.12	0.125	1.05	0.99–1.12	0.116	1.05	0.98–1.12	0.136	1.05	0.98–1.12	0.134	1.05	0.98–1.12	0.136
	Income (million yen)
		0.00	1.00			1.00			1.00			1.00			1.00
		0.01–1.00	1.37	1.29–1.46	<0.001	1.37	1.29–1.46	<0.001	1.37	1.29–1.46	<0.001	1.37	1.29–1.46	<0.001	1.37	1.29–1.46	<0.001
		1.01–2.00	1.96	1.84–2.09	<0.001	1.96	1.84–2.09	<0.001	1.96	1.84–2.09	<0.001	1.96	1.84–2.09	<0.001	1.96	1.84–2.09	<0.001
		2.01–	1.93	1.80–2.07	<0.001	1.93	1.80–2.07	<0.001	1.93	1.80–2.07	<0.001	1.93	1.80–2.07	<0.001	1.93	1.80–2.07	<0.001
Contextual factors of residence
	Indices for accessibility
		Log travel time to the nearest facility	0.91	0.87–0.95	<0.001	-			-			-			-
		Density^a	-			1.03	1.01–1.04	<0.001	-			-			-
		2SFCA^b	-			-			1.03	1.00–1.06	0.062	-			-
		E2SFCA with slow decay^b	-			-			-			1.03	1.00–1.06	0.050	-
		E2SFCA with quick decay^b	-			-			-			-			1.01	0.99–1.04	0.172
			σ²	SE		σ²	SE		σ²	SE		σ²	SE		σ²	SE
Random parameters
	Residence		0.360	0.018		0.356	0.019		0.364	0.019		0.364	0.019		0.367	0.019
	Household		2.10	0.024		2.10	0.024		2.10	0.024		2.10	0.024		2.10	0.024
AIC			189414			189414			189425			189425			189427

Abbreviations. AIC: Akaike’s Information criterion; CI: confidence interval; OR: odds ratio, SE: standard error.

^a Density of health care facilities divided by 5 was entered in the model, so odds ratios are for increases of 5 in density.

^b 2SFCA, E2SFCA with slow decay, and E2SFCA with quick decay multiplied by 10⁴ were entered in the model, so odds ratios are for increases of 10⁻⁴ in these variables.