Table 1. Characteristics of Preintervention and Postintervention Cohorts.
| Variable | Study Cohorta | P Valueb | |
|---|---|---|---|
| Preintervention (n = 233) |
Postintervention (n = 226) |
||
| Age, median (IQR), y | 62 (45-76) | 62 (46-73) | .67 |
| Male | 120 (51.5) | 133 (58.8) | .11 |
| APACHE IV score, median (IQR)c | 14.33 (4.09-33.23) | 14.38 (4.83-29.17) | .79 |
| Postoperative SICU stay | 173 (74.2) | 174 (77.0) | .49 |
| Required vasopressors | 58 (24.9) | 56 (24.8) | .98 |
| Required mechanical ventilation | 99 (42.5) | 87 (38.5) | .38 |
| Duration of ventilation, median (IQR), dd | 3 (1-7) | 3 (1-9) | .85 |
| Required readmission at any time | 17 (7.3) | 13 (5.8) | .50 |
| Required readmission within 48 h | 8 (3.4) | 4 (1.8) | .26 |
| SICU mortality | 18 (7.7) | 19 (8.4) | .79 |
| Hospital mortality | 18 (7.7) | 21 (9.3) | .55 |
| SICU LOS, median (IQR), de | 2 (1-4) | 2 (1-6) | .07 |
| Hospital LOS, median (IQR), d | 9 (5-17) | 9 (6-17) | .38 |
Abbreviations: APACHE IV, Acute Physiology and Chronic Health Evaluation; IQR, interquartile range; LOS, length of stay; SICU, surgical intensive care unit.
a
Unless otherwise indicated, data are expressed as number (percentage) of patients.
b
Comparisons of medians were conducted using the Mann-Whitney test; for categorical variables and proportions, Pearson χ2 test or Fisher exact test was used where appropriate.
c
Scores range from 0 to 286, with higher scores indicating a higher likelihood of mortality.
d
Includes those patients who required mechanical ventilation.
e
Readmissions to the SICU are included in this calculation.