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Stratified survival

Experimental The curves are safety.viz's Kaplan–Meier estimator, kmEstimate, which awaits its clinical review.

Do participants with high and low levels of this biomarker have different outcomes? Kaplan–Meier curves per group, with censor marks and an at-risk strip, above a histogram of the biomarker showing where the cut falls and how many land each side. The groups are a column's or a biomarker cut at its median, tertiles, quartiles or typed points, and the cut line can be dragged: the curves follow at once, and R is asked again when it is let go. Under it R's log-rank test, each group's median survival with its interval and, for two groups, the hazard ratio with its interval. Click a curve or a count at risk to list its participants and open a participant's profile. The data is the synthetic study: 200 made-up participants, and no real one.