Table 4.
Results from binary logistic regression for spasm positive versus spasm negative groups
| Average exposure rate determination time | N | Odds ratio (with 95% CI) | SE | P value |
|---|---|---|---|---|
| 48 h before angiographic spasm | 40 | 1.23 (1.00–1.51) | 0.11 | 0.05 |
| 72 h before angiographic spasm | 40 | 1.24 (1.03–1.51) | 0.10 | 0.03 |
| 72 h after angiographic spasm | 35 | 1.18 (0.91–1.53) | 0.21 | 0.21 |
| 48 h before clinical spasm | 38 | 1.12 (0.62–2.00) | 0.30 | 0.72 |
| 72 h before clinical spasm | 37 | 2.95 (1.00–8.80) | 0.56 | 0.05 |
| 72 h after clinical spasm | 36 | 1.08 (0.33–3.55) | 0.61 | 0.90 |