Adjusting National 2013 and for

May 2013

Adjusting National Health and Nutrition Examination Survey Sample Weights for Women of Childbearing Age

Series 2, Number 157

Copyright information

All material appearing in this report is in the public domain and may be reproduced or copied without permission; citation as to source, however, is appreciated.

Suggested citation

Parker J, Branum A, Axelrad D, Cohen J. Adjusting National Health and Nutrition Examination Survey sample weights for women of childbearing age. National Center for Health Statistics. Vital Health Stat 2(157). 2013.

Library of Congress Cataloging-in-Publication Data

Adjusting NHANES sample weights for women of childbearing age.

p. ; cm.-- (Vital and health statistics ; Series 2, Data evaluation and methods

research ; no. 157) (DHHS publication ; no. (PHS) 2013?1357)

``May 2013.''

Includes bibliographical references and index. ISBN 0?8406-0657?5 (alk. paper)

I. National Center for Health Statistics (U.S.) II. Series: Vital and health

statistics. Series 2, Data evaluation and methods research ; no. 157. III. Series:

DHHS publication ; No. (PHS) 2013?1357. 0276?4733

[DNLM: 1. National Health and Nutrition Examination Survey (U.S.) 2.

Fertility--United States. 3. Maternal Nutritional Physiological Phenomena--

United States. 4. Body Weight--United States. W2 A N148vb no.157 2013]

RA407.3

614.4'273021--dc23

2013013427

For sale by the U.S. Government Printing Office Superintendent of Documents Mail Stop: SSOP Washington, DC 20402?9328 Printed on acid-free paper.

Series 2, Number 157

Adjusting National Health and Nutrition Examination Survey Sample Weights for Women of Childbearing Age

Data Evaluation and Methods Research

U.S. DEPARTMENT OF HEALTH AND HUMAN SERVICES Centers for Disease Control and Prevention National Center for Health Statistics Hyattsville, Maryland May 2013 DHHS Publication No. 2013?1357

National Center for Health Statistics

Charles J. Rothwell, M.S., Acting Director Jennifer H. Madans, Ph.D., Associate Director for Science

Office of Analysis and Epidemiology Irma E. Arispe, Ph.D., Director

Contents

Acknowledgment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v

Abstract . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Adjusted Estimates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Appendix I. Calculation of Polychlorinated Biphenyls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Appendix II. Means or Geometric Means for Variables, by Age Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figures

Figure 1. Means (or geometric means) of nutritional factors for women aged 16?49, by age group: National Health and

Nutrition Examination Survey, 1999?2008 (selected years) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 2. Geometric means of environmental factors for women aged 16?49, by age group: National Health and Nutrition

Examination Survey, 1999?2008 (selected years) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Detailed Tables

1. Age and race distribution of women aged 16?49, by age group: National Health and Nutrition Examination Survey,

1999?2008. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2. Summary statistics (weighted) for analysis variables for women aged 16?49: National Health and Nutrition

Examination Survey, 1999?2008 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3. Distribution of original and adjusted sample weight variables (unweighted statistics) for women aged 16?49: National

Health and Nutrition Examination Survey, 1999?2008 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4. Correlations among original and adjusted weight variables (unweighted statistics) for women aged 16?49: National

Health and Nutrition Examination Survey, 1999?2008 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

5. Geometric mean and standard error for environmental variables using different adjustment methods for women aged

16?49: National Health and Nutrition Examination Survey, 1999?2008. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

6. Mean (or geometric mean) and standard error for nutritional variables using different adjustment methods for women

aged 16?49: National Health and Nutrition Examination Survey, 1999?2008 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

7. Percentiles (95% confidence intervals) for environmental variables using different weight methods for women aged

16?49: National Health and Nutrition Examination Survey, 1999?2008. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

8. Percentiles (95% confidence intervals) for nutritional variables using different weight methods for women aged 16?49:

National Health and Nutrition Examination Survey, 1999?2008 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

9. Mean and standard deviation for environmental variables using different adjustment methods for women aged 16?49,

by race and ethnicity: National Health and Nutrition Examination Survey, 1999?2008 . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

10. Mean (or geometric mean) and standard deviation for nutritional variables using different adjustment methods for

women aged 16?49, by race and ethnicity: National Health and Nutrition Examination Survey, 1999?2008 . . . . . . . . . . 18

iii

 ................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download