Fig. 3.
Association of increased survival and the combination group before propensity score matching. The difference in days (95%CI): The difference of restricted mean survival time (RMST) between the two groups (RMSTcombination-RMSTcrystalloids), means the increment or reduction of survival owing to the combination therapy. The preceded combination group (< 0 h) is defined as patients who received the albumin solution as the initiation of fluid administration and subsequently combined with crystalloids. The late combination group (> 24 h) is defined as patients who received the albumin greater than 24 h after crystalloids administration