Table 1.
Patient characteristics and clinical outcomes
| Before (n = 20) |
After (n = 30) |
P-value* | |
|---|---|---|---|
| Age (years) | 0.39 | ||
| Mean ± SD | 59.5 ± 17.3 | 64.4 ± 16.7 | |
| Gender | 1.0 | ||
| Female | 9 (45.0%) | 13 (43.3%) | |
| Male | 11 (55.0%) | 17 (56.7%) | |
| Admission category | 0.86 | ||
| Medical | 16 (80.0%) | 22 (73.3%) | |
| Surgical: Elective | 3 (15.0%) | 7 (23.3%) | |
| Surgical: Emergency | 1 (5.0%) | 1 (3.3%) | |
| Admission diagnosis | 0.07 | ||
| Cardiovascular/vascular | 7 (35.0%) | 7 (23.3%) | |
| Respiratory | 3 (15.0%) | 8 (26.7%) | |
| Gastrointestinal | 0 | 5 (16.7%) | |
| Neurologic | 1 (5.0%) | 2 (6.7%) | |
| Sepsis | 5 (25.0%) | 1 (3.3%) | |
| Trauma | 3 (15.0%) | 1 (3.3%) | |
| Metabolic | 0 | 2 (6.7%) | |
| Renal | 0 | 2 (6.7%) | |
| Other | 1 (5.0%) | 2 (6.7%) | |
| APACHE II score | 0.73 | ||
| Mean ± SD | 20.7 ± 6.9 | 21.3 ± 7.3 | |
| Presence of ARDS | 1.0 | ||
| No | 20 (100.0%) | 29 (96.7%) | |
| Yes | 0 | 1 (3.3%) | |
| Length of ICU stay (days) † | 0.14 | ||
| Median(IQR) | 17.9 (11.2 to 47.8) | 8.5 (4.9 to 12.7) | |
| Length of hospital stay (days) † | 0.02 | ||
| Median (IQR) | 57.4 (36.3 to Und.‡) | 22.9 (18.0 to 46.6) | |
| Length of mechanical ventilation (days) † | 0.06 | ||
| Median(IQR) | 11.8 (7.6 to 43.3) | 5.8 (3.6 to 8.6) | |
| Patient died within 60 days of ICU admission | 0.16 | ||
| No | 18 (90.0%) | 21 (70.0%) | |
| Yes | 2 (10.0%) | 9 (30.0%) | |
* Age and Apache II score were tested by the Wilcoxon-Mann-Whitney test, categorical variables were tested by Fisher's exact test, and length of stay variables were tested by the log-rank test.
† Based on 60-day survivors only. Time before ICU admission is not counted.
‡ Undefined because 44% (8/18) of surviving patients remained in hospital 60 days after ICU admission.
SD, standard deviation; IQR, interquartile range; APACHE, acute physiology and chronic health evaluation score; ARDS, acute respiratory distress syndrome; ICU, intensive care unit.