| Length of hospital stay | |||||||||
| trial name | Mean 1 | SD 1 | total 1 | mean 2 | SD 2 | total 2 | difcal | catcal | typepatient |
| Ahrens 2005 | 23.4 | 23.92 | 20 | 27.8 | 17.4 | 20 | 10.4 | 0 | 1 |
| Arabi 2011 | 70.2 | 106.9 | 120 | 67.2 | 93.6 | 120 | 2.55 | 1 | 0 |
| Arabi 2015 | 48.3 | 67.7 | 448 | 54.4 | 73.9 | 446 | 5.48 | 1 | 0 |
| Battistella 1997 | 27 | 16 | 27 | 39 | 24 | 30 | 7 | 0 | 1 |
| Charles 2014 | 35.2 | 4.9 | 41 | 31 | 2.5 | 42 | 5 | 1 | 0 |
| Choban 1997 | 48 | 30 | 6 | 45 | 38 | 7 | 14 | 1 | 1 |
| Ibrahim 2002 | 16.7 | 12.5 | 75 | 22.9 | 19.7 | 75 | 4.28 | 2 | 0 |
| McCowen 2000 | 19 | 14 | 21 | 17 | 15 | 19 | 4.1 | 1 | 1 |
| Norouzy 2013 | 19.9 | 11 | 30 | 35.6 | 25 | 30 | n/a | n/a | 0 |
| Petros 2016 | 38.1 | 33.4 | 46 | 27.4 | 21.9 | 54 | 8.4 | 1 | 0 |
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