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Do adult health outcomes in urban population reflect local health risk? A matched cohort analysis of migration effects in Ouagadougou, Burkina Faso

Bocquier, P; Soura, AB; Sanogo, S; Randall, S; (2019) Do adult health outcomes in urban population reflect local health risk? A matched cohort analysis of migration effects in Ouagadougou, Burkina Faso. BMJ Open , 9 (7) , Article e029059. 10.1136/bmjopen-2019-029059. Green open access

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Abstract

Background Selective migration may affect health indicators in both urban and rural areas. Sub-Saharan African urban areas show evidence of both negative and positive selection on health status at outmigration. Health outcomes as measured in urban populations may not reflect local health risks and access to health services. Methods Using the Ouagadougou Health and Demographic Surveillance System and a migrant followup survey, we measured differences in health between matched non-migrants and outmigrants. We applied Cox and competing risks models on migration and death. Results Controlling for premigration health status, migrants who moved out of Ouagadougou have higher mortality (HR 3.24, 95%CI 1.23 to 8.58) than non-migrants and migrants moving to other Ouagadougou areas. However, these effects vanish in the matched sample controlling for all interactions between death determinants. These and other results show little evidence that migration led to higher mortality or worse health. Conclusions Health outcomes as measured in Ouagadougou population do reflect local health risks and access to health services despite high migration intensity. However, neither the hypothesis of effect of health on migration nor the hypothesis of negative effect of migration on health or survival was confirmed.

Type: Article
Title: Do adult health outcomes in urban population reflect local health risk? A matched cohort analysis of migration effects in Ouagadougou, Burkina Faso
Open access status: An open access version is available from UCL Discovery
DOI: 10.1136/bmjopen-2019-029059
Publisher version: https://doi.org/10.1136/bmjopen-2019-029059
Language: English
Additional information: This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL SLASH
UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS
UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS > Dept of Anthropology
URI: https://discovery.ucl.ac.uk/id/eprint/10079765
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