Data collection
In addition to baseline information, the SOFA score was collected at baseline and on days 1, 2, 3, 4, 5, and 15 after enrollment. The BI was used to evaluate the functional status. The BI was determined by telephone calls or patient interviews at baseline and on days 28, 90, and 180 after study inclusion. The patients who died were assigned a score of 0. The BI scale was categorized into five groups (1) total dependency: 0–20 points, (2) severe dependency: BI 21–60 points, (3) moderate dependency: 61–90 points, (4) slight dependency: BI 91–99, and (5) independence 100 points [