| colon {eventglm} | R Documentation |
Chemotherapy for Stage B/C colon cancer
Description
These are data from one of the first successful trials of adjuvant chemotherapy for colon cancer. Levamisole is a low-toxicity compound previously used to treat worm infestations in animals; 5-FU is a moderately toxic (as these things go) chemotherapy agent. There are only one record per patient for the death outcome (or censoring). This is redistributed from the survival package, with a small modification to include only the death outcome.
Usage
colon
Format
A data frame with 929 rows and 17 variables:
- id
id
- study
1 for all patients
- rx
Treatment - Obs(ervation), Lev(amisole), Lev(amisole)+5-FU
- sex
1=male
- age
in years
- obstruct
obstruction of colon by tumour
- perfor
perforation of colon
- adhere
adherence to nearby organs
- nodes
number of lymph nodes with detectable cancer
- time
days until death or censoring
- status
censoring status
- differ
differentiation of tumour (1=well, 2=moderate, 3=poor)
- extent
Extent of local spread (1=submucosa, 2=muscle, 3=serosa, 4=contiguous structures)
- surg
time from surgery to registration (0=short, 1=long)
- node4
more than 4 positive lymph nodes
- etype
event type: 1=recurrence,2=death
- event
event indicator: censored, death