Underweight and obesity are associated with adverse health outcomes throughout the life course. We estimated the individual and combined prevalence of underweight or thinness and obesity, and their changes, from 1990 to 2022 for adults and school-aged children and adolescents in 200 countries...

The unknown or unobservable risk factors in the survival analysis cause heterogeneity between the individuals. Frailty models are used in the survival analysis to account for the unobserved heterogeneity in the individual risks to disease and death. In this paper, we suggest the shared gamma...

We present a stochastic model to describe variation in last closed birth interval for women of a given marriage duration by parity as well as regardless of parity. The model is derived under some simplified assumptions relating to human reproduction process accounting for the non-exposure period...