… TM Therneau et al., Modeling Survival Data: Extending the Cox Model … An example
where the refinement does matter, however, can be found in Therneau and Hamilton [149] …

Arguments formula a formula object, with the response on the left of a ‘~’operator and the
terms, separated by+ operators, on the right. The response must be a Surv object. Due to a …

Graphical methods based on the analysis of residuals are considered for the setting of the
highly-used Cox (1972) regression model and for the Andersen-Gill (1982) generalization of …

This document is a modification of a technical report from the Mayo Clinic Division of Biostatistics
[6], which was itself an expansion of an earlier Stanford report [5]. It is intended to give …

Nonproportional hazards can often be expressed by extending the Cox model to include time
varying coefficients; eg, for a single covariate, the hazard function for subject i is modelled …

Background A monoclonal gammopathy of undetermined significance (MGUS) occurs in up
to 2 percent of persons 50 years of age or older. Reliable predictors of progression have not …

A recent mandate emphasizes severity of liver disease to determine priorities in allocating
organs for liver transplantation and necessitates a disease severity index based on …

Patients with nonalcoholic fatty liver disease (NAFLD) and advanced liver fibrosis are at the
highest risk for progressing to end‐stage liver disease. We constructed and validated a …

Objective To determine the clinical and laboratory features of newly diagnosed multiple
myeloma. Patients and Methods Records of all patients in whom multiple myeloma was initially …

Background The prevalence of monoclonal gammopathy of undetermined significance (MGUS),
a premalignant plasma-cell disorder, among persons 50 years of age or older has not …