Browsing by Author "Mark Collinson"

Now showing 1 - 10 of 10
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    Cohort Profile Migrant Health FollowUp Study MHFUS of internal migration in South Africa
    (OXFORD UNIV PRESS) Carren Ginsburg; Mark Collinson; C Pheiffer; Francesc Gomez-Olive Casas; Sadson Harawa; S McGarvey; Daniel Ohene-Kwofie; AD Foster; T Myroniuk; Stephen Tollman; Michael White; E et al
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    Cohort Profile South African Population Research Infrastructure Network SAPRIN
    Mark Collinson; T Mudzana; T Mutevedzi; Kathleen Kahn; E Maimela; Francesc Gomez-Olive Casas; T Mngomezulu; Chodziwadziwa Kabudula; Stephen Tollman; E et al
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    Cohort Profile: Health and Ageing in Africa: A Longitudinal Study of an INDEPTH Community in South Africa (HAALSI).
    (2018) F Xavier Go´ mez-Olive´; Livia Montana; Ryan G Wagner; Chodziwadziwa W Kabudula; Julia K Rohr; Kathleen Kahn; Till Ba¨rnighausen; Mark Collinson; David Canning; Thomas Gaziano; Joshua A Salomon; Collin F Payne; Alisha Wad; Stephen M Tollman; Lisa Berkman
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    Dimensions of internal migration and their relationship to blood pressure in South Africa
    (2019-11) Chantel F. Pheiffer; Stephen T. McGarvey; Carren Ginsburg; Mark Collinson; F. Xavier Gómez-Olivé; Stephen Tollman; Michael J. White
    Hypertension prevalence is on the rise in low and middle income countries like South Africa, and migration and concomitant urbanization are often considered to be associated with this rise. However, relatively little is known about the relationship between blood pressure (BP) and internal migration - a highly prevalent population process in LMICs. This study employs data for a group of 194 adult men and women from an original pilot dataset drawn from the Agincourt Health and Demographic Surveillance System in northeast South Africa. Migrants in the sample are identified, tracked, and interviewed. The relationship between BP and migration distance and the number of months an individual spends away from his/her home village is estimated using robust OLS regression, controlling for a series of socioeconomic, health, and behavioral characteristics. This study finds migrants who move further distances and for longer durations to have significantly higher systolic and diastolic BP compared with shorter-term migrants and those who remain nearby or in their home village. These associations remain robust and statistically significant when adjusting for measures of socioeconomic conditions, as well as body mass index (BMI), and the number of meals consumed per day. Migration, both in terms of distance and time away, explains significant variation in BP among migrants in a typical South African context. This finding suggests the need for further studies of nutritional and psychosocial factors associated with geographic mobility that may be important factors for understanding rising hypertension in LMICs.
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    The dynamic role of household structure on under5 mortality in southern and eastern subSaharan Africa
    A Menashe-Oren; Philippe Bocquier; Carren Ginsburg; Y Compaore; Mark Collinson
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    Nexus between summer climate variability and household food security in rural Mpumalanga Province, South Africa
    (2023-09) Farirai Rusere; Lori Hunter; Mark Collinson; Wayne Twine
    depend on rainfed subsistence agriculture. This paper investigates the relationship between summer climate variability and household food security in rural Mpumalanga, South Africa. We used a household panel data set nested in the Agincourt Health and Socio-Demographic Surveillance System, together with rainfall and temperature data for the summer periods 2006-07 to 2018-19 from three weather stations that surround the study area. We quantified the variability of rainfall using coefficient of variation and the standardised rainfall anomaly index, while temperature variability was reflected by the standardised temperature anomaly. In addition, the Mann-Kendall analysis was applied to detect temporal trends in rainfall and temperature. Longitudinal models accounting for socioeconomic and climate factors were used to estimate the relationship between weather and climate. The results reveal significant impact on food security from high inter-annual rainfall variability through fluctuations in food consumption, dietary diversity, and the experience of hunger. This study offers significant insights on how dietary diversity, food availability and overall food security are positively associated with greater average rainfall through subsistence agriculture as a livelihood strategy. These insights have important implications by suggesting seasonal forecasts to predict periods of potential food insecurity in local communities and can guide government policy and interventions to lessen food insecurity in rural areas
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    Patterns and trends in household food security in rural Mpumalanga Province South Africa
    Farirai Rusere; Lori Hunter; Mark Collinson; Wayne Twine
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    Patterns and trends in household food security in rural Mpumalanga Province, South Africa
    (2024-02-05) Farirai Rusere; Lori Hunter; Mark Collinson; Wayne Twine
    This study examines patterns and trends in household food security in Bushbuckridge, Mpumalanga Province, South Africa, from 2010 to 2019. We use data from a household panel nested in the Agincourt Health and Socio- Demographic Surveillance System. Findings indicate that there have been improvements in household food security in this rural setting over the last decade. By polychoric principal component analysis, an aggregate food security index was constructed and we observed a small, yet important, proportion of households (7.8 %) that remained chronically food insecure. An ordered probit model was used to estimate the determinants of food security. Findings reveal that the observed differences in household food security status are as a result of differences in socioeconomic status. We therefore recommend that focus must be placed on identifying economic opportunities and empowering the chronically food insecure households if universal household food security is to be attained in rural South Africa and beyond.
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    The dynamic role of household structure on under-5 mortality in southern and eastern sub-Saharan Africa
    (2023-08-17) Ashira Menashe-Oren; Philippe Bocquier; Carren Ginsburg; Yacouba Compaore; Mark Collinson
    BACKGROUND Children are born and grow up in households, where they receive essential care, including time, socio-psychological support, and economic resources. Children’s immediate environment, captured by household structure, changes over time. OBJECTIVE We evaluate the role of dynamic household structure in the risk of child death in southern and eastern Africa. METHODS We use longitudinal data from 15 Health and Demographic Surveillance Systems between 1990 and 2016, covering almost 282,000 under-5 year olds. We analyse under5 mortality using semi-parametric Cox models accounting for time-varying household structure (household size and household typology) and controlling for maternal characteristics. RESULTS We find that children in smaller households have a higher risk of death than those in large households. In particular, children in households where they are the sole child with two adults of opposite sexes have the lowest chances of survival, reflecting a first-child effect.
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    Validity of selfreport for ascertaining HIV status among circular migrants and permanent residents in South Africa a crosssectional populationbased analysis
    (SPRINGER/PLENUM PUBLISHERS) R Yorlets; M Lurie; Carren Ginsburg; J Hogan; NR Joyce; Sadson Harawa; Mark Collinson; Francesc Gomez-Olive Casas; Michael White