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Hindi Zero-Inflated Models for Assessing the Effects of Supplements on Reducing Prostate Cancer Incidence
*Corresponding Author:
Copyright: © 2020 . This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Abstract
Data with many zeros are often encountered in medical and public health studies. In prostate cancer studies, for example, the frequency of use of nutritional supplements by black men has often preponderance of zeros as some men do not use any supplements at all. There is strong evidence from literature that the use of supplements may decrease the risk of prostate cancer (Clark et al., 1998; Abu-Shahin et al., 2013). Failure to account for extra zeros may result in biased parameter estimates and misleading inferences.
