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Direct linkLeow, Christine; Wen, Xiaoli; Korfmacher, Jon – Applied Developmental Science, 2015
This article compares regression modeling and propensity score analysis as different types of statistical techniques used in addressing selection bias when estimating the impact of two-year versus one-year Head Start on children's school readiness. The analyses were based on the national Head Start secondary dataset. After controlling for…
Descriptors: Early Intervention, Regression (Statistics), Databases, Predictor Variables
