Cuestionario Alimentario Nhanes

Vital and Health Statistics
Statistical Issues in Analyzing the NHANES I Epidemiologic FOIIOWUP Study
Series 2: Data Evaluation and Methods Research Not 121
This report presents alternative strategies for analysis of data from the NHANES I Epidemiologic Followup Study (NHEFS) using Cox proportional hazards and person-time logistic regression models. Analytic issues related to the complexsurvey design of the NHANES I and the variable length of followup of NHEFS participants are discussed,

U.S. DEPARTMENT OF HEALTH AND HUMAN SERVICES Public Health Service Centers Disease Control and Prevention for National Center for Health Statistics Hyattsville, Maryland May 1994 DHHS Publication No. [PHS) 94-1395

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Ubrary of Congreae

Cataloging-in-Publlaation

Data

Ingram, Deborah D. statistical issues in anal@ng the NHANES I Epidemiologic Followup

study.
p. cm. — (Viial and health statistics. Series 2. Data evaluation and methods rsseerch ; no. 121) (DHHS publication ;no. (PHS) 94-1395) By Deborah D. Ingram and Diane M. Makuc. “March 1SS4.” Includes bibliiraphical references and index. ISBN 0-6406-0467-4 1. National Health and Nuttilon Examination Survey (U.S.). Epidemiologic Followup Study. 2. Health survays-United Statea---statisticsl methods. 3. Nutrition surveys-Uniled Statea-Statistical methods. 4. National Health and Nutrition Examination Survey (U.S.).Epidemiologic Followup Study. 1. Makuc, Diane M. Il. National Health and Nutrition Examination Survey (U.S.). Epidemiologic Followup Study. Ill. National Canter for Health statistics (U.S.). IV. TMe. V. Series. V1. Series DHHS publicstiin ; no, (PHS) 94-1395. V1l. Series DHHS publication ; no. (PHS) 94-1395. [DNLM: 1. Epidemiologic Methods. 2. Heaith Surveys-Unifad States. 3. NutritionSurveys-United Ststee. W2 A N146vb no. 121 1994] RA40S.U45o.121 n 362.1 ‘0723 a-dc20 [614.4’273] DNLMIDLC 92-46566 for Library of Congress CIP

National Center for Health Statistics
Manning Feinleib, M.D., Dr.P.H., Director Jack R. Anderson, Deputy Director Jacob J. Feldman, Ph.D., Associate Director for Analysis, Epidemiology, and Health Promotion Gail F. Fisher, Ph.D., Associate Director for Planningand Extramural Programs Peter L. Hurley, Associate Director for V?taland Health Statistics Systems Robert A. Israel, Associate Director for International Statistics Stephen E. Nieberding, Associate Director for Management Charles J. Rothwell, Associate Director for Data Processing and Services Monroe G. Sirken, Ph.D., Associate Director for Research and Methodology

Division of Health andUtilization Analysis
Thomas A. Hodgson, Ph.D., Acting Director John L. Kiely, Ph.D., Chiej Infant and Child Health Studies Branch Diane M. Makuc, Dr. P.H., Chiej Analytical Studies Branch

Cooperation of the U.S. Bureau of the Census Under the legislation establishing the National Health Survey, the Public Health Service.is authorized to use, insofar as possible, the services or facilities of otherFederal, State, or private agencies. In accordance with specitiestions established by the National Center for Health Ststistica, the U.S. Bureau of the Census, under a contractual arrangement, participated in planning the survey and collecting the data.

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Contents

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Description of the study $,, ,,... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Baseline design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....