TABLE II.
Logistic Regression Models Assessing Factors Associated with Delayed ORST
| Factor | Univariate Analysis | Multivariable Analysis | Final Multivariable Model | |||
|---|---|---|---|---|---|---|
| OR* | P Value | OR* | P Value | OR* | P Value | |
| Age at surgery | 1.07 (1.01 to 1.14) | 0.014 | 1.04 (0.90 to 1.21) | 0.587 | — | — |
| Race | ||||||
| White | Reference | Reference | Reference | |||
| Racial or ethnic minority† | 2.43 (1.22 to 4.87) | 0.012 | 2.45 (1.03 to 5.98) | 0.045 | 2.44 (1.04 to 5.89) | 0.043 |
| Multiracial | 1.26 (0.38 to 3.69) | 0.68 | 2.59 (0.52 to 11.61) | 0.223 | 2.74 (0.57 to 11.76) | 0.185 |
| ED admission time | ||||||
| Midnight to 6 a.m. | Reference | Reference | Reference | |||
| 6 a.m. to noon | 8.29 (2.04 to 39.39) | 0.004 | 6.23 (1.12 to 39.49) | 0.041 | 6.62 (1.26 to 39.92) | 0.030 |
| Noon to 6 p.m. | 9.12 (3.18 to 33.23) | <0.001 | 8.48 (2.35 to 38.16) | 0.002 | 9.19 (2.68 to 39.50) | 0.001 |
| 6 p.m. to midnight | 0.92 (0.29 to 3.51) | 0.889 | 0.79 (0.21 to 3.51) | 0.736 | 0.67 (0.18 to 2.82) | 0.556 |
| Ambulance transfer | ||||||
| No | Reference | Reference | Reference | |||
| Yes | 3.47 (1.87 to 6.51) | <0.001 | 1.68 (0.59 to 4.89) | 0.333 | — | — |
| Outside hospital transfer | ||||||
| Yes | Reference | Reference | Reference | |||
| No | 3.17 (1.67 to 6.32) | 0.001 | 1.32 (0.44 to 3.96) | 0.614 | — | — |
| Comorbidities | ||||||
| No | Reference | Reference | Reference | |||
| Yes | 3.11 (1.63 to 5.97) | 0.001 | 4.27 (1.78 to 10.78) | 0.001 | 4.71 (2.01 to 11.69) | <0.001 |
| ISS | 1.10 (0.98 to 1.25) | 0.121 | 0.99 (0.81 to 1.21) | 0.902 | 0.98 (0.82 to 1.19) | 0.864 |
| Procedure type | ||||||
| ORIF | Reference | Reference | Reference | |||
| CR with spica cast | 2.59 (1.41 to 4.88) | 0.003 | 1.58 (0.34 to 7.04) | 0.554 | 2.49 (1.10 to 5.89) | 0.032 |
*
The values are given as the OR, with the 95% CI in parentheses.
†
Other racial or ethnic groups are Asian or South Asian, Black or African American, and Hispanic or Spanish origin.