Table 3. Models of the relationship between the numbers of each type of food stores and city level of income and urbanization^*.

	Large-sized supermarkets			Small/medium-sized markets			Specialty retailers
	IRR	P	95%CI	IRR	P	95%CI	IRR	P	95%CI
Income level (reference group: low)
Middle	1.35	0.160	(0.89,2.07)	0.72	0.329	(0.38,1.38)	0.66	0.383	(0.26,1.69)
High	1.84	0.046	(1.01,3.35)	0.51	0.022	(0.29,0.91)	0.55	0.196	(0.22,1.37)
Urbanization level (reference group: low)
Medium	1.40	0.207	(0.83,2.39)	1.26	0.223	(0.87,1.82)	1.57	0.171	(0.82,2.99)
High	1.95	0.005	(1.08,3.55)	0.69	0.044	(0.39,1.23)	0.83	0.604	(0.42,1.66)

*IRR, incidence-rate ratio.

The population size and area of study areas were adjusted for each model.