Power Calculations for ZIP and ZINB Models

We present power calculations for zero-inflated Poisson (ZIP) and zero-inflated negative-binomial (ZINB) models. We detail direct computations for a ZIP model based on a two-sample Wald test using the expected information matrix. We also demonstrate how Lyles, Lin, and Williamson's method (2006) of power approximation for categorical and count outcomes can be extended to both zero-inflated models. This method can be used for power calculations based on the Wald test (via the observed information matrix) and the likelihood ratio test, and can accommodate both categorical and continuous covariates. All the power calculations can be conducted when covariates are used in the modeling of both the count data and the ”excess zero” data, or in either part separately. We present simulations to detail the performance of the power calculations. Analysis of a malaria study is used for illustration.

並列關鍵字

Likelihood ratio test ； non-central chi-square distribution ； power ； sample size ； Wald test ； zero-inflated negative binomial model ； zero-inflated Poisson model

被引用紀錄

林瑜嫻（2008）。台灣棒球維基館網站之計量分析〔碩士論文，淡江大學〕。華藝線上圖書館。https://doi.org/10.6846/TKU.2008.00948

Liu, Y. R. (2014). 以原子層沉積法製備奈米鉑觸媒於氮化鈦反蛋白石結構應用於質子交換膜燃料電池之研究 [master's thesis, National Tsing Hua University]. Airiti Library. https://doi.org/10.6843/NTHU.2014.00359

葉晉池（2012）。應用D類功率放大器設計壓電馬達之驅動器〔碩士論文，中原大學〕。華藝線上圖書館。https://doi.org/10.6840/cycu201200926

廖家源（2010）。應用音頻放大器設計功率驅動電路〔碩士論文，中原大學〕。華藝線上圖書館。https://doi.org/10.6840/cycu201001050

廖崇良（2010）。3C通路商雙邊平台建構之研究—以聯強國際為例〔碩士論文，中原大學〕。華藝線上圖書館。https://doi.org/10.6840/cycu201000639

國際替代計量

Power Calculations for ZIP and ZINB Models

全文下載

主題瀏覽