1.4.4 Prostate Cancer Study Data Set
The Prostate Cancer Study data set consists of 380 patients in a study to determine whether the variables measured at a baseline medical examination can be used to predict whether the prostatic tumor has penetrated a prostatic capsule. The data were collected by Dr. Donn Young at the Ohio State University Comprehensive Cancer Center and the data have been modified to protect subject confidentiality. Variables included in this data set are summarized in Table 1.4.
Table 1.4 A Description of the Variables in the Prostate Cancer Study Data Set
| Variable | Description | Codes/values | Name |
|---|---|---|---|
| 1 | Identification code | ID number | ID |
| 2 | Tumor penetration of | 0 = No penetration | CAPSULE |
| prostatic capsule | 1 = Penetration | ||
| 3 | Age | Years | AGE |
| 4 | Race | 1 = White | RACE |
| 2 = Black | |||
| 5 | Results of the digital | 1 = No nodule | DPROS |
| rectal exam | 2 = Unilobar nodule (left) | ||
| 3 = Unilobar nodule (right) | |||
| 4 = Bilobar nodule | |||
| 6 | Detection of capsular | 1 = No | DCAPS |
| involvement in rectal exam | 2 = Yes | ||
| 7 | Prostatic-specific | mg/ml | PSA |
| antigen value | |||
| 8 | Tumor volume obtained | cm3 | VOL |
| from ultrasound | |||
| 9 | Total Gleason score | 0–10 | GLEASON |
1.4.5 Intensive Care Unit Data Set
The Intensive Care Unit data set consists of 200 observations on subjects involved in a study on the survival of patients following admission to an adult intensive care unit (ICU). The data set was collected at the Baystate Medical Center in Springfield, Massachusetts, and the variables included in this data set are summarized in Table 1.5.
Table 1.5 A Description of the Variables in the Intensive Care Unit Data Set
| Variable | Description | Codes/values | Name |
|---|---|---|---|
| 1 | Identification code | ID number | ID |
| 2 | Vital status | 0 = Lived | STA |
| 1 = Died | |||
| 3 | Age | Years | AGE |
| 4 | Sex | 0 = Male | SEX |
| 1 = Female | |||
| 5 | Race | 1 = White | RACE |
| 2 = Black | |||
| 3 = Other | |||
| 6 | Service at ICU admission | 0 = Medical | SER |
| 1 = Surgical | |||
| 7 | Cancer part of | 0 = No | CAN |
| present problem | 1 = Yes | ||
| 8 | History of chronic | 0 = No | CRN |
