Step-by-step assumptions underlying the use of Cox proportional hazards modeling for median sexual debut age estimation in age-censored data with generational trends
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Description: This document details the assumptions underlying the Cox proportional hazards modeling approach described by De Graaf, Ter Schure, and Van Liere (2021) in age-censored data with generational trends. The model fit is illustrated by full survival and hazard plots, that also serve as a description of the survey data set on Dutch adolescents in the past 25 years. We estimate the current (2020) debut age for sexual intercourse in this generation of young people at just over 18 years.