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Author |
Antiporta, D.A.; Smeeth, L.; Gilman, R.H.; Miranda, J.J. |
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Title |
Length of urban residence and obesity among within-country rural-to-urban Andean migrants |
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Journal Article |
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Year |
2016 |
Publication |
Public Health Nutrition |
Abbreviated Journal |
Public Health Nutr |
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Volume |
19 |
Issue |
7 |
Pages |
1270-1278 |
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Keywords |
Adipose Tissue/metabolism; Adolescent; Adult; Aged; Child; Child, Preschool; Cross-Sectional Studies; Female; Humans; Infant; Linear Models; Male; Middle Aged; Multivariate Analysis; Obesity/*epidemiology; Peru/epidemiology; Prevalence; *Residence Characteristics; Risk Factors; *Rural Population; Sensitivity and Specificity; Socioeconomic Factors; Time Factors; Transients and Migrants; *Urban Population; Young Adult; Migration; Nutritional epidemiology; Obesity; Peru; Rural-to-urban; Skinfold |
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Abstract |
OBJECTIVE: To evaluate the association between length of residence in an urban area and obesity among Peruvian rural-to-urban migrants. DESIGN: Cross-sectional database analysis of the migrant group from the PERU MIGRANT Study (2007). Exposure was length of urban residence, analysed as both a continuous (10-year units) and a categorical variable. Four skinfold site measurements (biceps, triceps, subscapular and suprailiac) were used to calculate body fat percentage and obesity (body fat percentage >25% males, >33% females). We used Poisson generalized linear models to estimate adjusted prevalence ratios and 95 % confidence intervals. Multicollinearity between age and length of urban residence was assessed using conditional numbers and correlation tests. SETTING: A peri-urban shantytown in the south of Lima, Peru. SUBJECTS: Rural-to-urban migrants (n 526) living in Lima. RESULTS: Multivariable analyses showed that for each 10-year unit increase in residence in an urban area, rural-to-urban migrants had, on average, a 12 % (95 % CI 6, 18 %) higher prevalence of obesity. This association was also present when length of urban residence was analysed in categories. Sensitivity analyses, conducted with non-migrant groups, showed no evidence of an association between 10-year age units and obesity in rural (P=0.159) or urban populations (P=0.078). High correlation and a large conditional number between age and length of urban residence were found, suggesting a strong collinearity between both variables. CONCLUSIONS: Longer lengths of urban residence are related to increased obesity in rural-to-urban migrant populations; therefore, interventions to prevent obesity in urban areas may benefit from targeting migrant groups. |
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Address |
1CRONICAS Center of Excellence in Chronic Diseases,Universidad Peruana Cayetano Heredia,Av. Armendariz 497,Miraflores,Lima 18,Peru |
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Language |
English |
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ISSN |
1368-9800 |
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Notes  |
PMID:26365215 |
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Call Number |
ref @ user @ |
Serial |
97696 |
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