Methods and Standards
This paper is focused on attrition and the HomVEE attrition standard in particular. The paper begins by defining attrition and explaining why the bias that attrition introduces into randomized controlled trials can be problematic when interpreting research results. HomVEE uses an attrition standard adapted from the Department of Education’s What Works Clearinghouse (WWC), another systematic evidence review. HomVEE’s population of interest includes pregnant women, and families with children age birth to kindergarten entry; the population is different than the school-age children whose test scores were the basis of the attrition standard for the WWC. This paper describes findings testing the sensitivity of the assumptions underlying the HomVEE standard using data about parents and young children. Note: This publication displays the attrition boundary from the HomVEE Version 1 Handbook. Please consult the latest handbook for the current HomVEE attrition boundary.