The overall distribution of survival times for U.K. AIDS patients.
Philos Trans R Soc Lond B Biol Sci
; 325(1226): 147-51, 1989 Sep 05.
Article
in En
| MEDLINE
| ID: mdl-2572013
ABSTRACT
Data on the survival times of 997 U.K. AIDS patients are analysed with the aim of deriving a simple form for the overall survival distribution. The exponential and Weibull distributions are modified to accommodate specific features of the data, in particular, the recording of survival times to the nearest month and the occurrence of a significant proportion of cases recorded as having zero time on study. The final model has a probability 0.08 of underlying survival time being zero and, given non-zero survival time, takes the form of an exponential distribution with mean of 14.95 months. The results are in close agreement with those of a study of New York City patients as well as the empirical data.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Models, Statistical
/
Acquired Immunodeficiency Syndrome
Type of study:
Observational_studies
/
Prognostic_studies
Limits:
Humans
Country/Region as subject:
Europa
Language:
En
Journal:
Philos Trans R Soc Lond B Biol Sci
Year:
1989
Type:
Article
Affiliation country:
United kingdom