Logistic regression analysis for hematoma growth
| OR (95% CI) | P value | C-Statistic | BIC | AIC | |
|---|---|---|---|---|---|
| Model 1 | 0.735 | 190.2 | 183.5 | ||
| No spot sign in the first phase (reference) | 1.0 | ||||
| Spot sign in the first phase | 10.5 (5.0–22.7) | <.001 | |||
| Model 2 | 0.798 | 182.8 | 172.7 | ||
| No spot sign (reference) | 1.0 | ||||
| Spot sign first appearing in the first phase | 17.1 (7.2–40.4) | <.001 | |||
| Spot sign first appearing in the second or third phase | 7.9 (2.7–23.2) | <.001 | |||
| Model 3 | 0.807 | 185.6 | 172.3 | ||
| No spot sign (reference) | 1.0 | ||||
| Spot sign first appearing in the first phase with volume <19.7 μL | 10.6 (3.7–30.9) | <.001 | |||
| Spot sign first appearing in the first phase with volume ≥19.7 μL | 27.6 (9.9–84.6) | <.001 | |||
| Spot sign first appearing in the second or third phase | 7.9 (2.7–23.2) | <.001 | |||
| Model 4 | 0.800 | 182.4 | 172.2 | ||
| No spot sign (reference) | 1.0 | ||||
| Spot sign with positive leakage rate between phases | 10.1 (4.2–24.1) | <.001 | |||
| Spot sign with negative leakage rate between any phases | 23.0 (8.1–65.5) | <.001 | |||
| Model 5a | 0.713 | 95.4 | 99.9 | ||
| Absolute leakage rate (per 1-μL/sec increase) | 1.26 (1.04–1.52) | .019 |
Note:—AIC indicates Akaike information criterion; BIC, Bayesian information criterion.
↵a Model 5 includes only patients with the spot sign (n = 69).