Table 2.
Univariate Analysis of Effect of Other Variables Studied on Appropriateness of Transfer.
| Variable | Appropriate |
Inappropriate |
Mean difference or odds ratio (95% CI) | P |
|---|---|---|---|---|
| Mean ± SD or n (%) | Mean ± SD or n (%) | |||
| Age | 34.5 ± 22.6 | 26.7 ± 23.6 | 7.8 (1.0 to 14.6) | .026 |
| Sex | ||||
| Male | 48 (31) | 103 (69) | 1.00 | Reference |
| Female | 19 (32) | 43 (68) | 1.06 (0.53 to 2.10) | .870 |
| Injury type | ||||
| Open fracture | 22 (61) | 14 (39) | 1.00 | Reference |
| Closed fracture | 13 (19) | 56 (81) | 6.77 (2.52 to 18.58) | <. 001 |
| Infection | 9 (29) | 22 (71) | 3.84 (1.23 to 12.29) | .009 |
| Laceration | 4 (13) | 26 (87) | 10.21 (2.59 to 43.89) | <. 001 |
| Amputation | 17 (50) | 17 (50) | 1.57 (0.55 to 4.54) | .350 |
| Other | 2 (15) | 11 (85) | 8.64 (1.44 to 66.78) | .005 |
| Race | ||||
| White | 35 (34) | 67 (66) | 1.00 | Reference |
| Black | 3 (20) | 12 (80) | 2.09 (0.50 to 10.04) | .269 |
| Hispanic | 24 (39) | 59 (71) | 1.28 (0.65 to 2.52) | .433 |
| Other | 5 (42) | 8 (58) | 0.84 (0.22 to 3.22) | .767 |
| Insurance type | ||||
| Worker’s compensation | 10 (71) | 4 (29) | 1.00 | Reference |
| Private | 24 (35) | 45 (65) | 4.69 (1.17 to 20.15) | .011 |
| Public | 15 (17) | 74 (83) | 12.33 (2.99 to 55.00) | <.001 |
| Medicare | 1 (50) | 1 (50) | 2.50 (0.05 to 128.35) | .541 |
| None | 14(41) | 20 (59) | 3.57 (0.79 to 17.19) | .057 |
| Other | 3 (60) | 2 (40) | 1.67 (0.13 to 22.49) | .637 |
| Time of transfer | ||||
| 23:01-07:00 | 21 (49) | 22 (51) | 1.00 | Reference |
| 07:01-15:00 | 27 (36) | 48 (64) | 1.70 (0.74 to 3.90) | .172 |
| 15:01-23:00 | 19 (20) | 76 (80) | 3.82 (1.63 to 9.01) | <.001 |
| Distance traveled | 44.6 ± 13.5 | 42.8 ± 7.1 | 1.8 (−7.7 to 11.2) | .687 |
| Median income (in thousands) | 51.30 ± 3.14 | 49.68 ± 4.04 | 1.61 (−2.40 to 5.63) | .459 |
Note. Boldface text highlights variables that reached significance (p-value less than 0.1 for univariate analysis). SD = standard deviation; CI = confidence interval; P = p-value.