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Title: A generalized chain binomial model with aggregated data
Authors: Xu, Y. 
Yip, P.S.F.
Huggins, R.M.
Keywords: Aggregated data
Calibration approximation
Chain binomial
Personal emergency link service
Issue Date: 2012
Citation: Xu, Y., Yip, P.S.F., Huggins, R.M. (2012). A generalized chain binomial model with aggregated data. Communications in Statistics - Theory and Methods 41 (18) : 3325-3338. ScholarBank@NUS Repository.
Abstract: In large cohort studies it can be impractical to report individual data that only summary or aggregated data are available. Using aggregated data from Bernoulli trials is expected to result in overdispersion so that a quasi-binomial approach would seem feasible. We show that when applied to aggregated data arising from cohorts of individuals according to a chain binomial model, the quasi-binomial model results in biased estimates. We propose an alternate calibration estimator and demonstrate its improved performance by simulations. The calibration method is then applied to model the probability of leaving a personal emergency link service in Hong Kong. Copyright © Taylor & Francis Group, LLC.
Source Title: Communications in Statistics - Theory and Methods
ISSN: 03610926
DOI: 10.1080/03610926.2011.563012
Appears in Collections:Staff Publications

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