Comparing Survival Curves

Figure 1. Means and medians for survival time
Means and medians for survival time

The means and medians for survival time table offers a quick numerical comparison of the "typical" times to effect for each of the medications. Since there is a lot of overlap in the confidence intervals, it is unlikely that there is much difference in the "average" survival time.

Figure 2. Pairwise comparisons
Pairwise comparisons

The percentiles table gives estimates of the first quartile, median, and third quartile of the survival distribution. The interpretation of percentiles for survival curves is that the 75th percentile is the latest time that at least 75 percent of the patients have yet to feel relief.

Figure 3. Overall comparisons
Overall comparisons

This table provides overall tests of the equality of survival times across groups. Since the significance values of the tests are all greater than 0.10, you cannot determine a difference between the survival curves.

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