Table 2.

Prevalence ratios and adjusted prevalence ratios for the association between length of residence in urban area and obesity as assessed by skinfolds, PERU MIGRANT Study, 2007

	Crude model		Model A		Model B
	Unadjusted PR	95 % CI	Adjusted PR	95 % CI	Adjusted PR	95 % CI
Length of urban residence (continuous, 10-year units)	1·08	1·03, 1·13	1·1	1·05, 1·16	1·12	1·06, 1·18
Length of urban residence (categories)
<20 years	1·00	Ref.	1·00	Ref.	1·00	Ref.
20–29 years	1·08	0·87, 1·33	1·13	0·94, 1·37	1·17	0·96, 1·42
30–39 years	1·26	1·03, 1·55	1·36	1·14, 1·69	1·39	1·14, 1·69
≥40 years	1·24	1·00, 1·53	1·33	1·12, 1·71	1·38	1·12, 1·71

PR, prevalence ratio; Ref. reference category.

Model A shows adjusted PR from the multivariable Poisson generalized linear model that included sex and age at first migration.

Model B is equal to Model A adjusted also by deprivation index, education level, smoking status, physical activity and alcohol consumption.