Table 3.
Multivariate interaction analysis of factors associated with flail chest injuries among patients with rib fractures after motor vehicle collisions in the 2019 ACS-TQIP database. AIS—Abbreviated Injury Scale. CVA—cerebrovascular accident. IQR—Interquartile range.
| Variable | Odds Ratio | 95% Confidence Interval | p Value |
|---|---|---|---|
| Age | 1.01 | 1.01–1.02 | <0.001 |
| Male sex | 1.03 | 0.89–1.18 | 0.720 |
| Seatbelt Type and airbag status (Interaction variable) | |||
| No seatbelt/no airbag | reference | ||
| No seatbelt/airbag present, not deployed | 0.84 | 0.57–1.22 | 0.358 |
| No seatbelt/airbag deployed | 0.90 | 0.72–1.13 | 0.377 |
| Lap belt/no airbag | 0.70 | 0.47–1.04 | 0.079 |
| Lap belt/airbag present, not deployed | 0.80 | 0.44–1.46 | 0.468 |
| Lap belt/airbag deployed | 0.59 | 0.43–0.80 | 0.001 |
| Shoulder belt/no airbag | 0.90 | 0.70–1.17 | 0.448 |
| Shoulder belt/airbag present, not deployed | 0.69 | 0.49–0.97 | 0.030 |
| Shoulder belt/airbag deployed | 0.57 | 0.46–0.70 | <0.001 |
| Body region maximum AIS | |||
| Head/Neck | 1.13 | 1.07–1.18 | <0.001 |
| General | 1.04 | 0.93–1.16 | 0.519 |
| Face | 1.07 | 0.95–1.20 | 0.257 |
| Extremities | 1.22 | 1.15–1.30 | <0.001 |
| Abdomen | 1.38 | 1.30–1.45 | <0.001 |
| History of Smoking | 1.28 | 0.95–1.73 | 0.103 |
| History of CVA | 2.16 | 1.21–3.87 | 0.009 |