Abstract:
Proportional hazard (PH) modeling is widely used in several areas of study to estimate the effect of covariates on
event timing. In this paper, this model is explored for the analysis of multiple occurrences of hardware failures in
personal computers. Multiple failure events consist of correlated data, and thus the assumption of independence
among failure times is violated. This study critically describes a class of models known as variance-corrected PH models
for modeling multiple failure time data, without assuming independence among failure times. The objective of this
study is to determine the effect of the computer brand on event timings of hardware failures and to test whether
this effect varies over multiple failure occurrences. This study revealed that the computer brand affects hardware
failure event timing and that further, this effect of the brand does not change over the multiple failure occurrences.
