{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T11:46:15Z","timestamp":1790855175331,"version":"4.1.0"},"reference-count":35,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2006,4,4]],"date-time":"2006-04-04T00:00:00Z","timestamp":1144108800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Statistics in Medicine"],"published-print":{"date-parts":[[2007,2,10]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Recurrent events such as repeated hospital admissions for the same health outcome occur frequently in environmental health studies. Dewanji and Moolgavkar proposed a flexible parametric model and a conditional likelihood analysis for recurrent events based on a Poisson process formulation. In this paper, we examine the statistical properties of the Dewanji\u2013Moolgavkar (DM) estimator of the risk of an adverse health outcome associated with environmental exposures based on recurrent event data using computer simulation. We also compare the DM approach with both case\u2013crossover analysis for multiple observations and time series analysis when there are no subject\u2010specific covariates. When using a correctly specified model, the DM method produced better estimates with respect to relative mean square error when each subject had constant or curved baseline intensity functions than it did when baseline intensities were increasing or decreasing in a linear fashion. For under\u2010specified models, the DM method outperformed case\u2013crossover analysis for decreasing straight line intensity functions, was outperformed by case\u2013crossover analysis for increasing straight line intensity functions, and was roughly equivalent to case\u2013crossover analysis for constant and curved intensity functions. Case\u2013crossover analysis produced superior risk estimates more frequently than the other two methods in the cases considered here, especially for linear representations of the baseline intensities. 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