Data from a prostate cancer trial in Byer & Green (1980)

Anonymized data from a randomized clinical trial of prostate cancer published in Byer & Green (1980).

Usage

data(prostate)

Format

A data frame with 502 observations and 16 variables, including:

dtime: Follow-up time in days.
status: Event status ("alive", "dead - prostatic ca", "dead - other ca", "dead - heart or vascular", "dead - cerebrovascular").
rx: Treatment assignment to diethylstilbestrol (DES) or a placebo.
age: Age at baseline (years).
wt: Weight in pounds.
pf: Performance status.
hx: History of cardiovascular disease.
sbp: Systolic blood pressure.
dbp: Diastolic blood pressure.
ekg: Electrocardiogram category.
hg: Hemoglobin level.
sz: Size of the primary tumor.
sg: Stage/grade of disease.
ap: Serum acid phosphatase.
bm: Bone metastases indicator.
stage: Clinical stage.
sdate: Start date.
patno: Patient number.

Source

Byer, D. P. & Green, S. B. (1980), 'Prognostic variables for survival in a randomized comparison of treatments for prostatic cancer', Bulletin du Cancer 67, 477-488

Details

The dataset records follow-up for cause of death together with treatment assignment and baseline characteristics. It is used in the package documentation to illustrate stratified cumulative incidence analyses.

Examples

data(prostate)
head(prostate)
#>   patno stage              rx dtime                 status age  wt
#> 1     1     3 0.2 mg estrogen    72                  alive  75  76
#> 2     2     3 0.2 mg estrogen     1        dead - other ca  54 116
#> 3     3     3 5.0 mg estrogen    40 dead - cerebrovascular  69 102
#> 4     4     3 0.2 mg estrogen    20 dead - cerebrovascular  75  94
#> 5     5     3         placebo    65                  alive  67  99
#> 6     6     3 0.2 mg estrogen    24    dead - prostatic ca  71  98
#>                     pf hx sbp dbp                           ekg       hg sz sg
#> 1      normal activity  0  15   9                  heart strain 13.79883  2  8
#> 2      normal activity  0  13   7 heart block or conduction def 14.59961 42 NA
#> 3      normal activity  1  14   8                  heart strain 13.39844  3  9
#> 4 in bed < 50% daytime  1  14   7                        benign 17.59766  4  8
#> 5      normal activity  0  17  10                        normal 13.39844 34  8
#> 6      normal activity  0  19  10                        normal 15.09961 10 11
#>          ap bm      sdate
#> 1 0.2999878  0 1977-08-10
#> 2 0.6999512  0 1977-09-21
#> 3 0.2999878  0 1978-01-12
#> 4 0.8999023  0 1978-03-19
#> 5 0.5000000  0 1978-03-22
#> 6 0.5999756  0 1978-06-14