TY  - GEN
AU  - Altman,D G
AU  - De Stavola,B L
TI  - Practical problems in fitting a proportional hazards model to data with updated measurements of the covariates
SN  - 0277-6715
PY  - 1994///0609
KW  - Aged
KW  - Analysis of Variance
KW  - Azathioprine
KW  - therapeutic use
KW  - Clinical Trials as Topic
KW  - statistics & numerical data
KW  - Double-Blind Method
KW  - Female
KW  - Follow-Up Studies
KW  - Humans
KW  - Liver Cirrhosis, Biliary
KW  - drug therapy
KW  - Male
KW  - Mathematical Computing
KW  - Middle Aged
KW  - Proportional Hazards Models
KW  - Software
KW  - Survival Analysis
N1  - Publication Type: Clinical Trial; Journal Article; Multicenter Study; Randomized Controlled Trial; Review
UR  - https://doi.org/10.1002/sim.4780130402
ER  -