Table 2 Clinical characteristics after propensity score matching
After propensity score matching | |||
|---|---|---|---|
Trainee | Senior | Standardized difference (%) | |
n = 96 | n = 96 | ||
Age (median [IQR]; years) | 71 [63, 76] | 68 [61, 75] | 1.8 |
Gender (male/female) (%) | 57/39 (59.4/40.6) | 56/40 (58.3/41.7) | 2.1 |
Height (median [IQR]; cm) | 161.3 [154.6, 166.7] | 162.1 [154.7, 167.9] | 0.4 |
Weight (median [IQR]; kg) | 57.5 [52.1, 61.97] | 58.3[50.5, 64.2] | 5.8 |
BMI (median [IQR]; kg/m2) | 22.1 [20.1, 24.1] | 22.4 [20.1, 24.3] | 7.1 |
ASA-PS (%) | 3.3 | ||
1 | 11 (11.5) | 10 (10.4) | |
2 | 85 (88.5) | 86 (89.6) | |
Duration of anesthesia (median [IQR]; h) | 3.88 [2.75, 4.86] | 3.95 [2.96, 5.04] | 1.9 |
Intraoperative fluid balance (median [IQR]; ml) | 1222 [931, 1518] | 1224 [926, 1630] | 3.1 |
Tube size (%) | 7.8 | ||
32 Fr | 5 (5.2) | 6 (6.2) | |
35 Fr | 43 (44.8) | 43 (44.8) | |
37 Fr | 45 (46.9) | 45 (46.9) | |
39 Fr | 3 (3.1) | 2 (2.1) | |
Tube depth (median [IQR]; cm) | 28 [27, 30] | 28 [27, 30] | 4.6 |
Intubation attempts (%) | 14.5 | ||
1 | 93 (96.9) | 92 (95.8) | |
2 | 3 (3.1) | 3 (3.1) | |
3 | 0 (0.0) | 0 (0.0) | |
4 | 0 (0.0) | 1 (1.0) | |
Cuff pressure (median [IQR]; cmH2O) | 20 [20, 22] | 20 [20, 20] | 6.5 |
Mallampati score (%) | 2.5 | ||
1 | 74 (77.1) | 75 (78.1) | |
2 | 22 (22.9) | 21 (21.9) | |
3 | 0 (0.0) | 0 (0.0) | |
4 | 0 (0.0) | 0 (0.0) | |
Cormack–Lehane grade (%) | < 0.1 | ||
1 | 76 (79.2) | 76 (79.2) | |
2 | 20 (20.8) | 20 (20.8) | |
3 | 0 (0.0) | 0 (0.0) | |
4 | 0 (0.0) | 0 (0.0) | |