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ERIC Number: EJ1151011
Record Type: Journal
Publication Date: 2017-Aug
Pages: 11
Abstractor: As Provided
ISBN: N/A
ISSN: ISSN-0268-1153
EISSN: N/A
Planning Community-Based Assessments of HIV Educational Intervention Programs in Sub-Saharan Africa
Kelcey, Ben; Shen, Zuchao
Health Education Research, v32 n4 p353-363 Aug 2017
A key consideration in planning studies of community-based HIV education programs is identifying a sample size large enough to ensure a reasonable probability of detecting program effects if they exist. Sufficient sample sizes for community- or group-based designs are proportional to the correlation or similarity of individuals within communities. As a result, efficient and effective design requires reasonable a priori estimates of the correlational structure among individuals within communities. In this study, we investigate the degree of correlation among individuals within communities and regions using samples of sixth-grade adolescents from 609 local area district communities and 122 regions in 15 sub-Saharan African nations. We develop nation-specific and international summaries of these correlations using variance partitioning coefficients from multilevel models and subsequently assess the extent to which different types of background variables delineate key sources of these correlations. The results suggest persistent differences among communities and regions and that the degree of correlation among individuals within communities varied considerably by nation. The findings underscore the importance of empirically derived values of design parameters that are anchored in evidence specific to the outcome, nation and context of the planned study.
Oxford University Press. Great Clarendon Street, Oxford OX2 6DP, UK. Tel: +44-1865-353907; Fax: +44-1865-353485; e-mail: jnls.cust.serv@oxfordjournals.org; Web site: http://her.oxfordjournals.org/
Publication Type: Journal Articles; Reports - Research
Education Level: Elementary Education; Grade 6; Intermediate Grades; Middle Schools
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: Africa
Grant or Contract Numbers: N/A