colon {survival} | R Documentation |
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 two records per person, one for recurrence and one for death
data(colon)
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 |
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 |
time: | days until death |
etype: | 1=recurrence,2=death |
Danyu Lin