TABLE 4. Linear regression analysis of lesion length compared with time to MRI adjusted for covariate regression coefficients and corresponding 95% CIs*.
| Variable | No. of Cases |
Coefficient | 95% CI | p Value |
|---|---|---|---|---|
| age | 42 | −0.2 | −0.5 to 0.1 | 0.28 |
| ISS | ||||
| 10–30 | 16 | 0.0 | referent | |
| 31–50 | 17 | 3.6 | −6.6 to 13.9 | 0.47 |
| 51–75 | 9 | 8.8 | −3.7 to 21.3 | 0.16 |
| ASIA motor score | ||||
| 0–10 | 23 | 0.0 | referent | |
| 11–20 | 9 | 10.2 | −1.9 to 22.4 | 0.10 |
| 21–40 | 10 | −8.1 | −19.1 to 2.8 | 0.14 |
| ASIA impairment grade | ||||
| A | 35 | 0.0 | referent | |
| B | 7 | −7.8 | −19.5 to 3.8 | 0.18 |
| MCC (%)† | ||||
| 6–40 | 12 | 0.0 | referent | |
| >40 | 30 | 8.9 | −0.2 to 18.1 | 0.06 |
| time to decompression | ||||
| >12 hrs | 29 | 0.0 | referent | |
| ≤12 hrs | 13 | −12.1 | −22.9 to −1.3 | 0.03 |
| time to MRI† | 42 | 2.0 | 0.0 to 4.0 | 0.05 |
*
Time to decompression (≤ 12 hours vs > 12 hours) was added to the model.
†
Expect lesion length to increase by 2.0 for a unit increase in time to MRI, while holding the other variables constant.