JSM 2004 - Toronto

Abstract #301343

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Activity Number: 117
Type: Contributed
Date/Time: Monday, August 9, 2004 : 10:30 AM to 12:20 PM
Sponsor: Section on Statistical Consulting
Abstract - #301343
Title: Confidence Intervals for Duan et al.'s Two-step Expenditure Estimation Method in the Presence of Weights
Author(s): Anna T.R. Legedza*+ and Christina Wee and Roger B. Davis
Companies: Beth Israel Deaconess Medical Center and Beth Israel Deaconess Medical Center and Beth Israel Deaconess Medical Center
Address: Division of General Medicine and Primary Care, Boston, MA, 02215,
Keywords: Duan et al. two step method ; 1998 MEPS survey ; weighted observations ; bootstrap confidence intervals
Abstract:

The policy objective of this work is to examine health care expenditures associated with overweight and obesity using the 1998 Medical Expenditure Panel Survey (n=11,212). We estimated the influence of body mass index on annual health care expenditures using a two-step approach proposed by Duan et al. (1982). Because of the complex sampling frame in which the data was collected, we propose modifications of this approach suited to analysis in SAS-callable SUDAAN. Our chief contributions are bootstrap confidence intervals in the presence of weighting and code to perform this operation. The analyses, interpretations, and conclusions in this work are those of the authors and do not reflect those of the National Center for Health Statistics or the Agency for Healthcare Research and Quality.

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