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An alternative approach to the analysis of longitudinal data via generalized estimating equations

โœ Scribed by N.Rao Chaganty

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
749 KB
Volume
63
Category
Article
ISSN
0378-3758

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โœฆ Synopsis

The generalized estimating equations (GEE) introduced by Liang and Zeger (Biometrika 73, (1986) 13-22) have been widely used over the past decade to analyze longitudinal data. The method uses a generalized quasi-score function estimate for the regression coefficients, and moment estimates for the correlation parameters, Recently, Crowder (Biometrika 82 (1995) 407MI0) has pointed out some pitfalls with the estimation of the correlation parameters in the GEE method. In this paper we present a new method for estimating the correlation parameters which overcomes those pitfalls. For some commonly assumed correlation structures, we obtain unique feasible estimates for the correlation parameters. Large sample properties of our cstimates are also established. @ 1997 Elsevier Science B.V.

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