Early Childhood Longitudinal Study, Birth Cohort (ECLS-B). Methodology Report for the 9-Month Data Collection (2001-02). Volume 2: Sampling

摘要

This report is Volume 2 of the methodology report that provides information about the development, design, and conduct of the 9-month data collection of the Early Childhood Longitudinal Study, Birth Cohort (ECLS-B). This volume begins with a brief overview of the ECLS-B, but focuses on the sample design, calculation of response rates, development of various sets of weights, and nonresponse bias analyses.