Table 2. Comparison of Patient Characteristics Before and After AITR Implementation.
| Characteristics | Pre-AITR (n=1453) | Post-AITR (n=1118) | p value | |
|---|---|---|---|---|
| Age (yr) | 46 (33–58) | 49 (34–61) | 0.001 | |
| Sex (male) | 715 (49.2) | 550 (49.2) | >0.999 | |
| Laboratory test | ||||
| Hemoglobin <10 (g/dL) | 36 (2.4) | 36 (3.2) | 0.205 | |
| Abnormal WBC count (103/uL) | 1033 (71.3) | 758 (68.3) | 0.108 | |
| Neutrophil count >80 (%) | 660 (45.5) | 513 (46.3) | 0.721 | |
| C-reactive protein >1.0 (mg/dL) | 872 (61.0) | 699 (63.5) | 0.187 | |
| Blood urea nitrogen >20 (mg/dL) | 138 (9.6) | 137 (12.5) | 0.020 | |
| Creatinine >1.0 (mg/dL) | 215 (14.9) | 163 (14.8) | >0.999 | |
| Albumin <3.0 (g/dL) | 63 (4.4) | 37 (3.9) | 0.527 | |
| Total bilirubin >2.0 (mg/dL) | 113 (7.8) | 46 (4.2) | <0.001 | |
| Vital sign | ||||
| SBP <90 (mm Hg) | 27 (1.9) | 14 (1.3) | 0.224 | |
| Pulse rate >100 (bpm) | 164 (11.3) | 153 (13.7) | 0.067 | |
| Body temperature >37.8 (°C) | 234 (16.1) | 190 (17.0) | 0.547 | |
| Diagnosis | <0.001 | |||
| Appendicitis | 1238 (85.2) | 886 (79.2) | ||
| Cholecystitis | 65 (4.5) | 128 (11.4) | ||
| Major emergency surgeries | 150 (10.3) | 104 (9.3) | ||
| Number of residents on 24-hr shift | 0.004 | |||
| 1 | 301 (20.7) | 191 (17.1) | ||
| 2 | 966 (66.5) | 812 (72.6) | ||
| 3 | 186 (7.2) | 115 (10.3) | ||
| Time from ER arrival to surgery (min) | 434.0 (331.0–614.0) | 443.0 (333.0–672.0) | 0.230 | |
| Length of hospital stay (day) | 4 (4–6) | 4 (3–6) | 0.761 | |
| Mortality | 34 (2.3) | 18 (1.6) | 0.192 | |
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 (%).