Table 5. Subgroup Analysis of Patients Who Underwent Minor Emergency Surgery.
| Variables | Pre-AITR (n=1299) | Post-AITR (n=1005) | p value | |
|---|---|---|---|---|
| Age (yr) | 44 (31–55) | 48 (33–59.25) | <0.001 | |
| Sex (male) | 634 (48.7) | 500 (49.3) | 0.755 | |
| Laboratory test | ||||
| Hemoglobin <10 (g/dL) | 18 (1.4) | 15 (1.5) | 0.861 | |
| Abnormal WBC (103/uL) | 939 (72.3) | 692 (68.9) | 0.073 | |
| Neutrophil count >80 (%) | 572 (44.0) | 453 (45.1) | 0.618 | |
| C-reactive protein >1.0 (mg/dL) | 781 (60.9) | 643 (64.6) | 0.071 | |
| Blood urea nitrogen >20 (mg/dL) | 77 (6.0) | 92 (9.2) | 0.003 | |
| Creatinine >1.0 (mg/dL) | 155 (12.0) | 123 (12.4) | 0.790 | |
| Albumin <3.0 (g/dL) | 18 (1.4) | 12 (1.4) | >0.999 | |
| Total bilirubin >2.0 (mg/dL) | 99 (7.7) | 42 (4.2) | 0.001 | |
| Vital sign | ||||
| SBP <90 (mm Hg) | 15 (0.6) | 7 (0.7) | 0.256 | |
| Pulse rate >100 bpm | 124 (9.5) | 117 (11.5) | 0.114 | |
| Body temperature >37.8 (°C) | 212 (16.3) | 177 (17.5) | 0.449 | |
| Number of residents on 24-hr shift | 0.003 | |||
| 1 | 270 (20.7) | 175 (17.3) | ||
| 2 | 862 (66.2) | 737 (72.7) | ||
| 3 | 171 (13.1) | 102 (10.1) | ||
| Diagnosis | <0.001 | |||
| Appendicitis | 1238 (95.0) | 886 (87.4) | ||
| Cholecystitis | 65 (5.0) | 128 (12.6) | ||
| Time from ER arrival to surgery (min) | 436.0 (332.0–619.0) | 446.5 (336.0–685.0) | 0.169 | |
| Length of hospital stay (day) | 4 (4–5) | 4 (3–5) | 0.316 | |
| Mortality | 10 (0.8) | 3 (0.3) | 0.132 | |
AITR, Act to Improve Training Conditions and the Status of Medical Residents; ER, emergency room; SBP, systolic blood pressure.
Data are presented as interquartile range or n (%).