A COMPARISON OF COX AND FRAILTY MODELS IN PRESENCE OF UNKNOWN RISK FACTORS
One of the most popular models for survival analysis is the Cox proportional hazard model. In this model, the hazard function may depend on unknowon risk factors which are impossible to include them in the model. This will lead to an increase in the variability of responses, which implies biased and...
Main Authors: | S KHEYRI, S FAGHIEHZADEH, M.R MESHKANI, M MAHMOUDI, G.H BABAEI |
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Format: | Article |
Language: | English |
Published: |
Wolters Kluwer Medknow Publications
2003-06-01
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Series: | Journal of Research in Medical Sciences |
Subjects: | |
Online Access: | http://journals.mui.ac.ir/jrms/article/view/2990 |
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