Abstract #302229

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JSM 2003 Abstract #302229
Activity Number: 363
Type: Contributed
Date/Time: Wednesday, August 6, 2003 : 10:30 AM to 12:20 PM
Sponsor: Section on Survey Research Methods
Abstract - #302229
Title: Variance Estimation for Combined Survey Estimates Using the Extended Delete-a-Group Jackknife
Author(s): James L. Reilly*+
Companies: University of Auckland
Address: Department of Statistics, 5-79 Beresford St., Auckland, NA, 1001, New Zealand
Keywords: variance estimation ; jackknife ; combined estimates ; weighting
Abstract:

Many survey programs consist of multiple surveys, with data from these surveys being combined in complex ways to produce the required estimates. While there are several general methods of variance estimation available for individual surveys, these often do not extend readily to combined survey estimates. This paper describes how the extended delete-a-group jackknife (Kott 1999) can provide an effective variance estimation method for combined survey estimates involving a variety of sample designs. For example, the technique has been applied to harvest estimates from the 1999/2000 New Zealand National Marine Recreational Fishing Survey (NZNMRFS). These estimates combine data from three different surveys: a diary survey of fishing behaviour, a telephone recruitment survey and a face-to-face in-home survey measuring fisher prevalence.

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