ERIC Number: EJ554759
Record Type: Journal
Publication Date: 1997
Reference Count: N/A
Adjusting for Attrition in School-Based Samples: Bias, Precision, and Cost Trade-Offs of Three Methods.
McGuigan, K. A.; Ellickson, P. L.; Hays, R. D.; Bell, R. M.
Evaluation Review, v21 n5 p554-67 Oct 1997
Tracking and two statistical methods (probability weighting and sample selection modeling) were studied as ways to minimize bias attributable to sample attrition in school-based studies. Data on student smoking from 30 middle schools illustrate that sample weighting yields the best results, with estimates superior to sample selection and much less expensive than tracking. (SLD)
Publication Type: Journal Articles; Reports - Evaluative
Education Level: N/A
Authoring Institution: N/A