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Table 2 This table summarises the Kaplan–Meier estimated median survival time for the three ALS risk groups in the Irish training and test cohorts and the Italian cohort

From: Predicting prognosis in amyotrophic lateral sclerosis: a simple algorithm

  High-risk group Medium-risk group Low-risk group Log-rank p value
N Median survival time 95 % CI N Median survival time 95 % CI N Median survival time 95 % CI
Training set 26 22.0 16.0–28.0 64 34.0 30.5–37.5 27 63.0 50.1–75.9 <0.0001
Irish test set 14 11.0 7.3–14.7 51 33.0 28.6–37.4 21 73.0 48.0–98.0 <0.0001
Italian cohort 18 22.0 19.2–24.8 72 35.0 26.9–43.1 32 91.0 63.6–118.4 <0.0001