Emanating from classical Weibull mixture models we propose a framework for clustering survival data with various more parsimonious models by imposing restrictions on the distributional parameters. We show that these restrictions on the Weibull mixtures correspond to different proportional hazard...

Purpose – Items that ask the respondent for a comment in his/her own words are becoming increasingly popular in online employee surveys, but research on such comments is scarce. The purpose of this paper is to analyze, theoretically and empirically, what kind of comments are generated in...

Purpose – The purpose of this research is to investigate whether the participants in an employee survey who do not answer one or more demographic items differ systematically from those who fill out all demographic items. Design/methodology/approach – Logistic regression, with affective...