Abstract:
We propose a test for the proportional hazards (Cox) model which is oriented against wide classes of alternatives including monotone hazard ratios and crossings of survival functions and can be used when data are left truncated and right censored. The limit distribution of the test statistics is derived. The results are applied for statistical analysis of classical data considered by Stablein and Koutrouvelis [19], Klein and Moeschberger [12], Hosmer and Lemeshow [7], Hosmer, Lemeshow and May [8]. Bibl. – 20 titles.
Key words and phrases:AFT model, Cox model, chemotherapy, crossings of survival functions, chemotherapy plus radiotherapy, chi-squared test, censored data, drug abuse, elderly, explanatory variable, gastric cancer patient, heroin addict, metadone treatment, left truncated data, modified score function, monotone hazard ratio, retirement community, right censored data.