Table 1 Clinical characteristics prior to propensity score matching
Prior to propensity score matching | |||
|---|---|---|---|
Trainee | Senior | Standardized difference (%) | |
n = 153 | n = 103 | ||
Age (median [IQR]; years) | 69 [57, 75] | 68 [61, 75] | 15.5 |
Gender (male/female) (%) | 90/63 (58.8/41.2) | 62/41 (60.2/39.8) | 2.8 |
Height (median [IQR]; cm) | 161.4 [155.0, 168.4] | 162.2 [155.6, 168.0] | 0.6 |
Weight (median [IQR]; kg) | 59.6 [52.6, 66.3] | 58.0 [50.7, 64.3] | 15 |
BMI (median [IQR]; kg/m2) | 22.8 [20.5, 25.0] | 22.3 [20.1, 24.2] | 17.1 |
ASA-PS (%) | 23.3 | ||
1 | 27 (17.6) | 10 (9.7) | |
2 | 126 (82.4) | 93 (90.3) | |
Duration of anesthesia (median [IQR]; h) | 4.0 [3.1, 5.0] | 4.0 [2.9, 5.0] | 1.4 |
Intraoperative fluid balance (median [IQR]; ml) | 1299 [995, 1733] | 1232 [926, 1630] | 14.8 |
Tube size (%) | 14.6 | ||
32 Fr | 12 (7.8) | 6 (5.8) | |
35 Fr | 64 (41.8) | 45 (43.7) | |
37 Fr | 69 (45.1) | 49 (47.6) | |
39 Fr | 8 (5.2) | 3 (2.9) | |
Tube depth (median [IQR]; cm) | 28 [27, 30] | 29 [27, 30] | 15.8 |
Intubation attempts (%) | 4.1 | ||
1 | 147 (96.1) | 99 (96.1) | |
2 | 5 (3.3) | 3 (2.9) | |
3 | 0 (0.0) | 0 (0.0) | |
4 | 1 (0.6) | 1 (1.0) | |
Cuff pressure (median [IQR]; cmH2O) | 20 [20, 20] | 20 [20, 20] | 10.4 |
Mallampati score (%) | 17.1 | ||
1 | 109 (71.2) | 81 (78.6) | |
2 | 44 (28.8) | 22 (21.4) | |
3 | 0 (0.0) | 0 (0.0) | |
4 | 0 (0.0) | 0 (0.0) | |
Cormack–Lehane grade (%) | 16.3 | ||
1 | 120 (78.4) | 82 (79.6) | |
2 | 31 (20.3) | 21 (20.4) | |
3 | 2 (1.3) | 0 (0.0) | |
4 | 0 (0.0) | 0 (0.0) | |