Ghana, Kenya, South Africa, Tanzania, Uganda - Epidemiology and Treatment of Epilepsy in sub-Saharan Africa
Reference ID | INDEPTH.GH002.SEEDS.v1 |
Year | 2007 - 2008 |
Country | Ghana, Kenya, South Africa, Tanzania, Uganda |
Producer(s) |
Prof C R Newton - Dept of Psychiatry, University of Oxford, UK and KEMRI/Wellcome Trust Research Programme, Centre for Geographic Medicine Research–Coast, Kilifi , Kenya. Anthony K Ngugi - Dept |
Sponsor(s) | Wellcome Trust Senior Fellowship in Clinical Tropical Medicine - WT - Funder Wellcome Trust Research Programme - WT - Funder University of the Witwatersrand - Wits - Partial support at Agincourt South African Medical Research Council - MRC |
Collection(s) |
Created on
Aug 29, 2013
Last modified
Dec 29, 2013
Page views
291628
Sampling
Sampling Procedure
Sample size calculations. With an anticipated prevalence of at least 4/1,00016,20,159,160, in a DSS of at least 60,000 subjects, the 95% limits will be 3.5-4.5/1,000 at each site, or 3.8-4.2/1000 for the sites combined. For age-specific prevalences, confidence limits will be 2.3-5.7/1,000 in the smallest age stratum (>50 years) in the smallest site.
A random population sample from each centre's census database with the RAND() command in MySQL (Oracle, Redwood Shores, CA, USA).
For each case, an age-matched control individual was randomly selected from the relevant centre's census database with the RAND() command. The control individuals were frequency matched by age groups: 0-5 years, 6-12 years, 13-18 years, 19-28 years, 29-49 years, and 50 years or older. In the case-control study, two or three control individuals were selected to compensate for non-response and ensure balance in the number of cases and control individuals at each centre. All control individuals were assessed by a clinician to confirm that they did not have epilepsy.
Deviations from Sample Design
None reported
Response Rate
Stage One:
Kilifi , Kenya 99.3%
Agincourt, South Africa 99.6%
Iganga-Mayuge, Uganda 92.8%
Ifakara, Tazania 89.3%
Kintampo, Ghana 87.7%
Overall 94.5%
Stage Two
Kilifi , Kenya 94.8%
Agincourt, South Africa 94.3%
Iganga-Mayuge, Uganda 64.0%
Ifakara, Tazania 95.1%
Kintampo, Ghana 91.1%
Overall 84.1%
Stage Three
Kilifi , Kenya 84.4%
Agincourt, South Africa 92.7%
Iganga-Mayuge, Uganda 64.2%
Ifakara, Tazania 91.1%
Kintampo, Ghana 77.7%
Overall 82.0%