title: Analysis under Cox's failure time model using weighted least squares.
abstract: The Cox proportional hazards model is frequently used for covariate analysis of data on survival experience. When the exposure covariates take on a small number of distinct values and a separate parameter is assumed for each value, the likelihood equations simplify. The parameters under various model restrictions can be estimated by weighted least squares. An illustration is provided. The method is applicable for certain parametric models.
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D008962:Models, Theoretical; D009026:Mortality; D012306:Risk; D013223:Statistics as Topic; D013964:Thyroid Neoplasms / Q000401:mortality