In this paper, a statistical model is proposed to analyze effects of advertising when observations are single-source data.

For repeated events, fixed-effects regression methods-which control for all stable covariates-can be implemented by doing Cox regression with stratification on individuals. For nonrepeated events, we ...

We conducted a simulation study to compare the behavior of these models applied to case-crossover designs with time series analyzed with Poisson and with case-crossover analyzed by conditional ...