Objective: HIV-positive women have higher human papillomavirus (HPV) prevalence and
cervical cancer incidence than HIV-negative women, partly because of HIV's modifying effect …

For the analysis of time-to-event data, frequently used methods such as the log-rank test or
the Cox proportional hazards model are based on the proportional hazards assumption …

Background Case-cohort studies have become common in epidemiological studies of rare
disease, with Cox regression models the principal method used in their analysis. However …

Background To evaluate the differences in treatment modality and outcomes between male
and female patients with laryngeal squamous cell carcinoma (SCC) in the United States …

Results The cohort consisted of 69,371 individuals representing> 112,000 person-years of
follow-up. Mean age±SD was 60.8±15.5 years. There were 21.1 (99% confidence interval …

Methods: This study used data gathered from medical records of 561 colorectal cancer
patients who were admitted to Namazi Hospital, Shiraz, Iran, during 2005 to 2010 and …

This book aims to promote regression methods for analyzing lifetime (or time-to-event) data
that are based on a representation of the underlying process, and are therefore likely to offer …

Frailty models are used in the survival analysis to account for the unobserved heterogeneity
in individual risks to disease and death. To analyze the bivariate data on related survival …

Background: Patients with affective disorder seem to experience higher risks of several
somatic diseases, but no studies have provided estimates of both absolute and relative risks …

The aim of the present study was to retrospectively study the onset and progression
sequence of the most frequent pathways of drug use initiation in a sample of the Spanish …