Figure 1
From: Tissue Doppler in critical illness: a retrospective cohort study
Survival at 28 days. Shown is a Kaplan-Meier curve of 28-day survival, according to quintiles of left ventricular end systolic volume (P = 0.0089). Threshold values (ml): first quintile ≤ 27; second quintile > 27 but ≤ 45; third quintile > 45 but ≤ 72; fourth quintile > 72 but ≤ 105; and fifth quintile > 105. Log rank analysis confirms no significant difference between survival curves for the first to fourth quintiles (P = 0.97).