Background: Survival time is one of the indicators used for evaluation of the quality of care in
different types of malignancies, including breast cancer. The present study aimed to estimate …

The literature on structurally separate corporate venture units (CVUs) has suggested how
these units may improve but also to some extent attenuate the survival chances of new …

Mastitis is a complex disease affecting dairy cows and is considered to be the most costly
disease of dairy herds. The hazard of mastitis is a function of many factors, both managerial …

Demographic models describe population dynamics in terms of the movement of individuals
among states (eg size, age, developmental stage, parity, frailty, physiological condition) …

Purpose Compared with conventional radiation therapy, intensity modulated radiation
therapy (IMRT) may reduce acute toxicity from anal cancer treatment, potentially leading to …

Multivariate survival data are frequently encountered in biomedical applications in the form
of clustered failures (or recurrent events data). A popular way of analyzing such data is by …

Background Obstetric fistula is an abnormal connection between the vagina and rectum
and/or bladder, which leads to continuous urinary or fecal incontinence. It is a serious …

Introduction: the timing of birth of the first child has a direct relationship with fertility in
general and health and future career including further education of a mother in particular …

Background Describing the relationship between socioeconomic inequalities and cancer
survival is important but methodologically challenging. We propose guidelines for …

Survival models with a frailty term are presented as an extension of Cox's proportional
hazard model, in which a random effect is introduced in the hazard function in a …