An application of Cox regression model to the analysis of grouped pulmonary tuberculosis survival data

摘要

The recent statistical literature attests to a considerableudcurrent interest in specialised statistical methods forudthe analysis of time to occurrence or failure time data inudmedical research.udFrequently the primary objective of a failure time Studyudconcerns with the association between certain co-variatesudZ = (Z1, ..., Zp) and the time T > 0 to the occurrence of audcertain event. For example a clinical study may be designed toudcompare several treatment programmes in respect to the time T toudrecurrence of a disease or response to treatment of a disease.udThe regression vector Z would include indicator components forudtreatment as well as other prognostic factors.