Table 4.
Uni- and multivariate analysis for determination of risk factors for recurrent cerebral arachnoid cysts
| Variable | Odds ratio | 95% CI | p |
|---|---|---|---|
| A. Univariate analysis | |||
| Age < 6 years | 9.4 | 2.0–47.2 | 0.005 |
| Sex (m vs f) | 1 | 0.25–3.9 | 0.9 |
| Hygroma pre-op | 0.75 | 0.1–3.5 | 0.7 |
| Hygroma post-op | 4.3 | 0.9–19.4 | 0.06 |
| Expanded ventricular system pre-op | 13.3 | 2.9–96.7 | 0.0006 |
| Expanded ventricular system post-op | 3.0 | 0.4–18.3 | 0.3 |
| Surgical approach | |||
| Microsurgery/endoscopy | 0.9 | 0.2–3.4 | 0.8 |
| Stereotaxy | 1.4 | 0.3–5.5 | 0.6 |
| Ruptured cyst pre-op | 1.3 | 0.06–10.4 | 0.8 |
| Prominent optical nerve sheaths | 2.4 | 0.6–10.4 | 0.2 |
| Cyst localization | |||
| Supra- vs. infratentorial | 1.5 | 0.4–7.4 | 0.6 |
| Side (right vs. left) | 0.3 | 0.04–1.4 | 0.1 |
| Pre-op symptoms | |||
| Paresis | 10.7 | 1.5–93.3 | 0.02 |
| Focal deficits | 2.8 | 0.9–28.7 | 0.06 |
| Headache | 0.6 | 0.1–2.6 | 0.5 |
| Vertigo | 0.5 | 0.02–2.9 | 0.5 |
| Coordination disturbance | 1.3 | 0.06–10.4 | 0.8 |
| Visual deficits | 1.0 | 0.05–7.6 | 0.9 |
| Increased intracranial pressure | 1.3 | 0.06–10.4 | 0.8 |
| Macrocephalus | 2.8 | 0.1–32.1 | 0.4 |
| B. Multivariate analysis | |||
| Age < 6 years | 2.3 | 0.03–0.5 | 0.03 |
| Expanded ventricular system pre-op | 2.2 | 0.02–0.4 | 0.03 |
| Pre-op symptoms | |||
| Paresis | 2.7 | 0.1–0.7 | 0.008 |