Table 2.
Trachea and vocal cord injuries
| DLT group (n = 90) | VDLT group (n = 92) | P value | RR (95% CI) | |
| Trachea injury | ||||
| Severity | 0.077 | |||
| None | 27 (30.0) | 18 (19.6) | ||
| Mild | 31 (34.4) | 29 (31) | ||
| Moderate | 27 (30) | 38 (41.3) | ||
| Severe | 5 (5.6) | 7 (7.6) | ||
| Total incidence | 0.074 | 1.38 (0.97 to 1.95) | ||
| None-mild | 58 (64.4) | 47 (51.1) | ||
| Moderate– severe | 32 (35.6) | 45 (48.9) | ||
| Level of injury | ||||
| Subglottic | 18 (20) | 29 (31.5) | 0.091 | 1.58 (0.95 to 2.62) |
| Main trachea | 23 (25.6) | 39 (42.4) | 0.019 | 1.66 (1.08 to 2.54) |
| Carina | 17 (18.9) | 10 (10.9) | 0.148 | 0.57 (0.28 to 1.19) |
| Bronchus | 16 (17.8) | 6 (6.5) | 0.023 | 0.37 (0.15 to 0.90) |
| Vocal cord injury | 0.449 | |||
| None | 59 (65.6) | 58 (63.0) | ||
| Petechiae | 21 (23.3) | 18 (19.6) | ||
| Oedema | 10 (11.1) | 16 (17.4) | ||
| Haematoma | 0 (0) | 0 (0) |
Data are presented as number (%). 95% CI, 95% confidence interval; RR, relative risk.