Prostate: Prostate Cancer Data
In islasso: The Induced Smoothed Lasso

Prostate

R Documentation

Prostate Cancer Data

Description

This dataset originates from a study examining the correlation between prostate-specific antigen levels and various clinical measures in men scheduled for radical prostatectomy. It contains 97 rows and 9 variables.

Format

A data frame with 97 observations and 9 variables:

lcavol: Log of cancer volume
lweight: Log of prostate weight
age: Age of the patient
lbph: Log of benign prostatic hyperplasia amount
svi: Seminal vesicle invasion (binary)
lcp: Log of capsular penetration
gleason: Gleason score
pgg45: Percentage of Gleason scores 4 or 5
lpsa: Log of prostate-specific antigen

Source

Stamey, T.A., et al. (1989). Prostate specific antigen in the diagnosis and treatment of adenocarcinoma of the prostate: II. radical prostatectomy treated patients. Journal of Urology, 141(5), 1076-1083.

References

Stamey, T.A., Kabalin, J.N., McNeal, J.E., Johnstone, I.M., Freiha, F., Redwine, E.A., and Yang, N. (1989). Journal of Urology, 141(5), 1076-1083.

Examples

data(Prostate)
summary(Prostate)
cor(Prostate$lpsa, Prostate$lcavol)
## Not run: 
  fit <- islasso(lpsa ~ ., data = Prostate, family = gaussian())
  summary(fit, pval = 0.05)
  lambda.aic <- aic.islasso(fit, method = "AIC")
  fit.aic <- update(fit, lambda = lambda.aic)
  summary(fit.aic, pval = 0.05)

## End(Not run)

islasso documentation built on Aug. 9, 2025, 1:06 a.m.