Obesity risk in rural, urban and rural-to-urban migrants: Prospective results of the PERU MIGRANT study

R. M. Carrillo-Larco, A. Bernabé-Ortiz, T. D. Pillay, Robert H Gilman, J. F. Sanchez, J. A. Poterico, R. Quispe, L. Smeeth, J. J. Miranda

Research output: Contribution to journalArticle

Abstract

Background:Although migration and urbanization have been linked with higher obesity rates, especially in low-resource settings, prospective information about the magnitude of these effects is lacking. We estimated the risk of obesity and central obesity among rural subjects, rural-to-urban migrants and urban subjects.Methods:Prospective data from the PERU MIGRANT Study were analyzed. Baseline data were collected in 2007-2008 and participants re-contacted in 2012-2013. At follow-up, outcomes were obesity and central obesity measured by body mass index and waist circumference. At baseline, the primary exposure was demographic group: rural, rural-to-urban migrant and urban. Other exposures included an assets index and educational attainment. Cumulative incidence, incidence ratio (IR) and 95% confidence intervals (95% CI) for obesity and central obesity were estimated with Poisson regression models.Results:At baseline, mean age (±s.d.) was 47.9 (±12.0) years, and 53.0% were females. Rural subjects comprised 20.2% of the total sample, whereas 59.7% were rural-to-urban migrants and 20.1% were urban dwellers. A total of 3598 and 2174 person-years were analyzed for obesity and central obesity outcomes, respectively. At baseline, the prevalence of obesity and central obesity was 20.0 and 52.5%. In multivariable models, migrant and urban groups had an 8-to 9.5-fold higher IR of obesity compared with the rural group (IR migrants=8.19, 95% CI=2.72-24.67; IR urban=9.51, 95% CI=2.74-33.01). For central obesity, there was a higher IR only among the migrant group (IR=1.95; 95% CI=1.22-3.13). Assets index was associated with a higher IR of central obesity (IR top versus bottom tertile 1.45, 95% CI=1.03-2.06).Conclusions:Peruvian urban individuals and rural-to-urban migrants show a higher incidence of obesity compared with their rural counterparts. Given the ongoing urbanization occurring in middle-income countries, the rapid development of increased obesity risk by rural-to-urban migrants suggests that measures to reduce obesity should be a priority for this group.

Original languageEnglish (US)
Pages (from-to)181-185
Number of pages5
JournalInternational Journal of Obesity
Volume40
Issue number1
DOIs
StatePublished - Jan 1 2016

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Abdominal Obesity
Obesity
Incidence
Confidence Intervals
Urbanization
Waist Circumference
Body Mass Index
Demography

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Nutrition and Dietetics
  • Endocrinology, Diabetes and Metabolism

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Carrillo-Larco, R. M., Bernabé-Ortiz, A., Pillay, T. D., Gilman, R. H., Sanchez, J. F., Poterico, J. A., ... Miranda, J. J. (2016). Obesity risk in rural, urban and rural-to-urban migrants: Prospective results of the PERU MIGRANT study. International Journal of Obesity, 40(1), 181-185. https://doi.org/10.1038/ijo.2015.140

Obesity risk in rural, urban and rural-to-urban migrants : Prospective results of the PERU MIGRANT study. / Carrillo-Larco, R. M.; Bernabé-Ortiz, A.; Pillay, T. D.; Gilman, Robert H; Sanchez, J. F.; Poterico, J. A.; Quispe, R.; Smeeth, L.; Miranda, J. J.

In: International Journal of Obesity, Vol. 40, No. 1, 01.01.2016, p. 181-185.

Research output: Contribution to journalArticle

Carrillo-Larco, RM, Bernabé-Ortiz, A, Pillay, TD, Gilman, RH, Sanchez, JF, Poterico, JA, Quispe, R, Smeeth, L & Miranda, JJ 2016, 'Obesity risk in rural, urban and rural-to-urban migrants: Prospective results of the PERU MIGRANT study', International Journal of Obesity, vol. 40, no. 1, pp. 181-185. https://doi.org/10.1038/ijo.2015.140
Carrillo-Larco, R. M. ; Bernabé-Ortiz, A. ; Pillay, T. D. ; Gilman, Robert H ; Sanchez, J. F. ; Poterico, J. A. ; Quispe, R. ; Smeeth, L. ; Miranda, J. J. / Obesity risk in rural, urban and rural-to-urban migrants : Prospective results of the PERU MIGRANT study. In: International Journal of Obesity. 2016 ; Vol. 40, No. 1. pp. 181-185.
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abstract = "Background:Although migration and urbanization have been linked with higher obesity rates, especially in low-resource settings, prospective information about the magnitude of these effects is lacking. We estimated the risk of obesity and central obesity among rural subjects, rural-to-urban migrants and urban subjects.Methods:Prospective data from the PERU MIGRANT Study were analyzed. Baseline data were collected in 2007-2008 and participants re-contacted in 2012-2013. At follow-up, outcomes were obesity and central obesity measured by body mass index and waist circumference. At baseline, the primary exposure was demographic group: rural, rural-to-urban migrant and urban. Other exposures included an assets index and educational attainment. Cumulative incidence, incidence ratio (IR) and 95{\%} confidence intervals (95{\%} CI) for obesity and central obesity were estimated with Poisson regression models.Results:At baseline, mean age (±s.d.) was 47.9 (±12.0) years, and 53.0{\%} were females. Rural subjects comprised 20.2{\%} of the total sample, whereas 59.7{\%} were rural-to-urban migrants and 20.1{\%} were urban dwellers. A total of 3598 and 2174 person-years were analyzed for obesity and central obesity outcomes, respectively. At baseline, the prevalence of obesity and central obesity was 20.0 and 52.5{\%}. In multivariable models, migrant and urban groups had an 8-to 9.5-fold higher IR of obesity compared with the rural group (IR migrants=8.19, 95{\%} CI=2.72-24.67; IR urban=9.51, 95{\%} CI=2.74-33.01). For central obesity, there was a higher IR only among the migrant group (IR=1.95; 95{\%} CI=1.22-3.13). Assets index was associated with a higher IR of central obesity (IR top versus bottom tertile 1.45, 95{\%} CI=1.03-2.06).Conclusions:Peruvian urban individuals and rural-to-urban migrants show a higher incidence of obesity compared with their rural counterparts. Given the ongoing urbanization occurring in middle-income countries, the rapid development of increased obesity risk by rural-to-urban migrants suggests that measures to reduce obesity should be a priority for this group.",
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T2 - Prospective results of the PERU MIGRANT study

AU - Carrillo-Larco, R. M.

AU - Bernabé-Ortiz, A.

AU - Pillay, T. D.

AU - Gilman, Robert H

AU - Sanchez, J. F.

AU - Poterico, J. A.

AU - Quispe, R.

AU - Smeeth, L.

AU - Miranda, J. J.

PY - 2016/1/1

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N2 - Background:Although migration and urbanization have been linked with higher obesity rates, especially in low-resource settings, prospective information about the magnitude of these effects is lacking. We estimated the risk of obesity and central obesity among rural subjects, rural-to-urban migrants and urban subjects.Methods:Prospective data from the PERU MIGRANT Study were analyzed. Baseline data were collected in 2007-2008 and participants re-contacted in 2012-2013. At follow-up, outcomes were obesity and central obesity measured by body mass index and waist circumference. At baseline, the primary exposure was demographic group: rural, rural-to-urban migrant and urban. Other exposures included an assets index and educational attainment. Cumulative incidence, incidence ratio (IR) and 95% confidence intervals (95% CI) for obesity and central obesity were estimated with Poisson regression models.Results:At baseline, mean age (±s.d.) was 47.9 (±12.0) years, and 53.0% were females. Rural subjects comprised 20.2% of the total sample, whereas 59.7% were rural-to-urban migrants and 20.1% were urban dwellers. A total of 3598 and 2174 person-years were analyzed for obesity and central obesity outcomes, respectively. At baseline, the prevalence of obesity and central obesity was 20.0 and 52.5%. In multivariable models, migrant and urban groups had an 8-to 9.5-fold higher IR of obesity compared with the rural group (IR migrants=8.19, 95% CI=2.72-24.67; IR urban=9.51, 95% CI=2.74-33.01). For central obesity, there was a higher IR only among the migrant group (IR=1.95; 95% CI=1.22-3.13). Assets index was associated with a higher IR of central obesity (IR top versus bottom tertile 1.45, 95% CI=1.03-2.06).Conclusions:Peruvian urban individuals and rural-to-urban migrants show a higher incidence of obesity compared with their rural counterparts. Given the ongoing urbanization occurring in middle-income countries, the rapid development of increased obesity risk by rural-to-urban migrants suggests that measures to reduce obesity should be a priority for this group.

AB - Background:Although migration and urbanization have been linked with higher obesity rates, especially in low-resource settings, prospective information about the magnitude of these effects is lacking. We estimated the risk of obesity and central obesity among rural subjects, rural-to-urban migrants and urban subjects.Methods:Prospective data from the PERU MIGRANT Study were analyzed. Baseline data were collected in 2007-2008 and participants re-contacted in 2012-2013. At follow-up, outcomes were obesity and central obesity measured by body mass index and waist circumference. At baseline, the primary exposure was demographic group: rural, rural-to-urban migrant and urban. Other exposures included an assets index and educational attainment. Cumulative incidence, incidence ratio (IR) and 95% confidence intervals (95% CI) for obesity and central obesity were estimated with Poisson regression models.Results:At baseline, mean age (±s.d.) was 47.9 (±12.0) years, and 53.0% were females. Rural subjects comprised 20.2% of the total sample, whereas 59.7% were rural-to-urban migrants and 20.1% were urban dwellers. A total of 3598 and 2174 person-years were analyzed for obesity and central obesity outcomes, respectively. At baseline, the prevalence of obesity and central obesity was 20.0 and 52.5%. In multivariable models, migrant and urban groups had an 8-to 9.5-fold higher IR of obesity compared with the rural group (IR migrants=8.19, 95% CI=2.72-24.67; IR urban=9.51, 95% CI=2.74-33.01). For central obesity, there was a higher IR only among the migrant group (IR=1.95; 95% CI=1.22-3.13). Assets index was associated with a higher IR of central obesity (IR top versus bottom tertile 1.45, 95% CI=1.03-2.06).Conclusions:Peruvian urban individuals and rural-to-urban migrants show a higher incidence of obesity compared with their rural counterparts. Given the ongoing urbanization occurring in middle-income countries, the rapid development of increased obesity risk by rural-to-urban migrants suggests that measures to reduce obesity should be a priority for this group.

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