NOTICE: The project that is the subject of this report was approved by the Governing Board of the National Research Council, whose members are drawn from the councils of the National Academy of Sciences, the National Academy of Engineering, and the Institute of Medicine. The members of the committee responsible for the report were chosen for their special competences and with regard for appropriate balance.

This study was supported by Contract No. HHS-100-98-0011 between the National Academy of Sciences and the U.S. Department of Health and Human Services. Support of the work of the Committee on National Statistics is provided by a consortium of federal agencies through a grant from the National Science Foundation (Number SBR-9709489). Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the views of the organizations or agencies that provided support for the project.

Library of Congress Cataloging-in-Publication Data

Studies of welfare populations: data collection and research issues: Panel on Data and Methods for Measuring the Effects of Changes in Social Welfare Programs/Michele Ver Ploeg, Robert A.Moffitt, and Constance F.Citro, editors; Committee on National Statistics, Division of Behavioral and Social Sciences and Education, National Research Council.

p. cm.

Includes bibliographical references and index.

1. Public welfare—Statistical methods. 2. Social surveys. 3. Public welfare—Research—Methodology. I. Ver Ploeg, Michele. II. Moffitt, Robert A. III. Citro, Constance F. (Constance Forbes), 1942- IV. Panel on Data and Methods for Measuring the Effects of Changes in Social Welfare Programs (U.S.)

HV29 .S78 2002

362.5'8'072—dc21

2001005893

Suggested citation: Studies of Welfare Populations: Data Collection and Research Issues (2002). Panel on Data and Methods for Measuring the Effects of Changes in Social Welfare Programs, Michele Ver Ploeg, Robert A.Moffitt, and Constance F.Citro, Editors. Committee on National Statistics, Division of Behavioral and Social Sciences and Education. Washington, DC: National Academy Press.