Length of hospital stay | Prone position n = 40 (100%) | Supine position n = 83 (100%) | Mean of difference | p-value |
0 - 7 days 8 - 21 days 22 - 30 days >30 days | 21 (52.5%) 12 (30.0%) 5 (5%) 5 (12.5%) | 12 (26.8%) 50 (40.7%) 10 (8.1%) 30 (24.4%) | −14.7 | 0.001 |