Feasibility of a large cohort study in sub-Saharan Africa assessed through a four-country study
Initiatives
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A pilot study with the primary objective of determining the feasibility of enrolling and following persons for future long-term cohort studies on NCDs in Nigeria, South Africa, Tanzania, and Uganda, and to gather information on self-reported diagnoses of selected communicable and NCDs, their risk factors, injuries, mental health, and diet
Note: All published information has been collected from the article referenced in the Marker Paper box below. Therefore, there may be variations with more advanced versions of the study.
- Start Year
- 2011
- Funding
- This work was funded by a grant from the Dean's office of the Harvard School of Public Health, the Harvard School of Public Health Department of Nutrition, and Karolinska Institutet Distinguished Professor Award to Prof. Hans-Olov Adami (Dnr: 2368/10–221). The authors thank Dr. Walter Willett for his funding support and input in developing the Food Frequency Questionnaire and Megan Diamond for data management assistance.
Design
- Study design
- Population cohort
Marker Paper
Dalal S, Holmes MD, Laurence C, et al. Feasibility of a large cohort study in sub-Saharan Africa assessed through a four-country study. Glob Health Action. 2015;8:27422. Published 2015 May 25. doi:10.3402/gha.v8.27422
PUBMED 26015082
Recruitment
- Sources of Recruitment
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- Individuals
Number of participants
- Number of participants
- 1,415
- Number of participants with biosamples
Access
Availability of data and biosamples
| Data | |
| Biosamples | |
| Other |
Supplementary Information
Participants reported that they would be willing to provide samples of blood (993 of 1213 respondents; 82%), saliva (843/1142; 74%), urine (841/1126; 75%), nails (624/1028; 61%), and hair (557/984; 57%) in future research.
Timeline
prospective study at five sites in four sub-Saharan countries
Participant eligibility criteria were adults aged 18 years or older, and for the professional cohorts, were additionally those employed in schools (South Africa and Tanzania) or hospitals (Nigeria) at the time of data collection
Selection Criteria
- Minimum age
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18
- Newborns
- Twins
- Countries
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- Nigeria
- Uganda
- Tanzania
- Ethnic Origin
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- Health Status
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- Other criteria
- Retired teachers and those due to retire in the following 6 months were excluded.
Recruitment
- Sources of recruitment
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- General population
Number of participants
- Number of participants
- 1,415
- Number of participants with biosamples
Data Collection Event
Teachers who indicated at baseline that they were willing to complete a follow-up questionnaire after 6 months received this by email or post according to their preference. Participants were reminded by phone, SMS, and email to return their documents.
- Start Date
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2011-05
- End Date
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2011-09
- Data sources
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Mobile data collection
- Mobile phone
- Smartphone
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Mobile data collection