a nonsignificant trendP = 0.06
Sensitivity analyses showed similar results using random-effects model and mortality during all-time period as primary endpoint: increased mortality with low-intensity alerts (RR 1.15; 95% CI 1.00–1.32; I 2 = 0%; P = 0.04), decreased mortality with moderate-intensity alerts (RR 0.93; 95% CI 0.90–0.97; I 2 = 0%), and a nonsignificant trend in the high-intensity group (RR 0.92; 95% CI 0.85–1.00; I 2 = 49%; P = 0.06) (Additional file 1 : Supplementary Figs. 26, 27).