About the Authors

Fiifi Amoako Johnson

faj100@soton.ac.uk

Affiliation Centre for Global Health, Population, Poverty and Policy and Division of Social Statistics and Demography, University of Southampton, Southampton, United Kingdom

Sabu S. Padmadas

Affiliation Centre for Global Health, Population, Poverty and Policy and Division of Social Statistics and Demography, University of Southampton, Southampton, United Kingdom

Zoë Matthews

Affiliation Centre for Global Health, Population, Poverty and Policy and Division of Social Statistics and Demography, University of Southampton, Southampton, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: FAJ SSP ZM. Analyzed the data: FAJ SSP. Contributed reagents/materials/analysis tools: FAJ SSP ZM. Wrote the paper: FAJ SSP ZM. Extracted the datasets, developed the concept, did the initial statistical data analysis and wrote the first draft: FAJ. Provided supervision of data analysis, interpretation of context-specific results, demographic explanation and final drafting of the article: SSP. Provided statistical advice and policy interpretation and did the final revision of the article for important intellectual content: ZM.