Comparison of variables for CT findings
| Proper insertion (n=23), n (%) | Improper insertion (n=61), n (%) | P value | |
| Gender | 1 | ||
| Female | 1 (16.7) | 5 (83.3) | |
| Male | 22 (28.2) | 56 (71.8) | |
| Chest tube | 0.5382 | ||
| No | 3 (18.8) | 13 (81.3) | |
| Yes | 20 (29.4) | 48 (70.6) | |
| Injury type | 0.262 | ||
| Blunt | 18 (31) | 40 (69) | |
| Penetrating | 5 (19.2) | 21 (80.8) | |
| Transportation | 0.0405 | ||
| Ground | 9 (18.8) | 39 (81.3) | |
| Air | 14 (38.9) | 22 (61.1) | |
| NT performed by | 0.106 | ||
| Ground crew | 18 (24) | 57 (76) | |
| Air crew | 5 (55.6) | 4 (44.4) | |
| Hospital D/C | 0.4994 | ||
| Alive | 21 (29.6) | 50 (70.4) | |
| Dead | 2 (15.4) | 11 (84.6) | |
| Chest wall thickness | |||
| Second ICS-MCL | 0.6052 | ||
| <50 mm | 11 (35.5) | 20 (64.5) | |
| 50–59 mm | 8 (29.6) | 19 (70.4) | |
| 60–69 mm | 2 (18.2) | 9 (81.8) | |
| 70–79 mm | 1 (10) | 9 (90) | |
| 80+ mm | 1 (20) | 4 (80) | |
| Fourth ICS-MAL | 0.1298 | ||
| <50 mm | 14 (38.9) | 22 (61.1) | |
| 50–59 mm | 5 (29.4) | 12 (70.6) | |
| 60–69 mm | 1 (8.3) | 11 (91.7) | |
| 70–79 mm | 3 (25) | 9 (75) | |
| 80+ mm | 0 (0) | 7 (100) | |
| Fourth ICS-AAL | 0.6651 | ||
| <50 mm | 12 (31.6) | 26 (68.4) | |
| 50–59 mm | 6 (33.3) | 12 (66.7) | |
| 60–69 mm | 2 (18.2) | 9 (81.8) | |
| 70–79 mm | 3 (25) | 9 (75) | |
| 80+ mm | 0 (0) | 5 (100) | |
These data excluded those 18 dead on arrival.
ICS-AAL, intercostal space of the anterior axillary line; ICS-MAL, intercostal space of the midaxillary line; ICS-MCL, intercostal space of the midclavicular line; NT, needle thoracostomy.