Whether Groups Have Different Survival Curves
Use grouped survival analysis when the question is whether survival differs between levels of a grouping variable.
- unadjusted curves: Kaplan-Meier (
km) - adjusted group differences: Cox with the group as predictor
km.assoc <- associate$regression(
data,
outcome = demented,
time = age.death,
predictors = prs.tertile,
model = "km"
)What comes back
A PolyGeniusAssociations object with an omnibus log-rank row for km, plus curve, risk-table, and group-summary artifacts.
Plotting
visualize$associations$survival(km.assoc, show.event.table = TRUE) visualize$associations$heatmap(km.assoc)