Figure 1: (A) Cumulative "survival" probabilities of openly admitted versus selected students, obtained by Kaplan-Meier technique. The observation period for the 2000 openly admitted students is about six years whereas for selected students it is about three years. The difference between the curves is highly significant (P<0.0001). (B)Cumulative "survival" probabilities of openly admitted students, stratified by sex (female, male) and age at study entry (up to 20.86 years, above 20.86 years)