Table 3.
Predictive factors of Hypo-attenuating Berry Sign (HBS) presence based on multivariate analysis
| Variables | Reader 1 | Reader 2 | ||
|---|---|---|---|---|
| OR (95%CI) | P value | OR (95%CI) | P value | |
| Age | 0.986(0.935-1.039) | 0.601 | 0.958(0.906-1.013) | 0.128 |
| Sex | 3.184(0.961-10.548) | 0.058 | 2.274(0.672-7.699) | 0.187 |
| Diabetes | 0.627(0.173-2.274) | 0.478 | 0.637(0.171-2.367) | 0.501 |
| Attenuation value* (HU) | 1.031(0.970-1.096) | 0.331 | 1.028(0.959-1.102) | 0.436 |
| Hunt-Hess score ≥ 3 | 0.918(0.256-3.298) | 0.896 | 0.343(0.090-1.302) | 0.116 |
| Fisher score ≥ 4 | 0.906(0.284-2.889) | 0.868 | 1.421(0.389-5.186) | 0.595 |
| Aneurism size& | 1.667(1.238-2.244) | < 0.001 | 1.696(1.231-2.335) | 0.001 |
| Aneurism location& | ||||
| ACA | 1.747(0.348-8.775) | 0.498 | 5.997(0.959-37.514) | 0.056 |
| MCA | 2.662(0.439-16.148) | 0.287 | 2.218(0.396-12.411) | 0.365 |
| ICA | 1.853(0.413-8.309) | 0.420 | 3.334(0.711-15.642) | 0.127 |
| Posterior circulation | Reference | Reference | ||
&: Size and location based on DSA results; *: the value of subarachnoid hemorrhage (SAH) surrounding HBS; HU: Hounsfield unit; ICA: internal carotid artery; MCA: middle cerebral artery; ACA: anterior cerebral artery (including anterior communicating artery); OR: Odds ratio; CI: confidence interval.