In this study we reinvestigate the effect of time-aggregation for discrete- and continuous-time hazard models. We reanalyze the results of a previous Monte Carlo study by ter Hofstede and Wedel (1998), in which the effects of time-aggregation on the parameter estimates of hazard models were investigated. Whereas the previous study shows that the estimates of the baseline parameters of continuous- and discrete-time models suffer a lot from time-aggregation, we show that the effects on the baseline hazard itself are much smaller, in particular for the continuous-time model.
ter Hofstede, F., & Wedel, M. (1999). Time Aggregation Effects on the Baseline of Continuous-Time and Discrete-Time Hazard Models. Economics Letters, 64(May), 145-150. https://doi.org/10.1016/S0165-1765(99)00032-4