Table 2 Factors associated with one-year mortality: univariate and multivariate analysis
Univariate analysis (n = 148) | Multivariate analysis (n = 148) | ||||
|---|---|---|---|---|---|
One-year survivors n = 124 | One-year non-survivors n = 24 | P-valuea | Hazard ratio (95% confidence interval) | P-valueb | |
Age, years | 53 (45–60) | 67 (51–71) | 0.006 | 1.03 (1.00–1.07) | 0.045 |
Gender, Woman, n (%) | 76 (61) | 14 (58) | 0.822 | ||
Hypertension, n (%) | 57 (46) | 12 (50) | 0.824 | ||
Characteristics on admission | |||||
Glasgow Coma Scale | 15 (13–15) | 12 (8–14) | < 0.001 | ||
Neurological deficit, n (%) | 30 (24) | 10 (42) | 0.085 | ||
WFNS grading scale | 1 (1–2) | 4 (2–4) | < 0.001 | 1.53 (1.16–2.02) | 0.003 |
Fisher scale | 4 (2–4) | 4 (3–4) | 0.030 | ||
Complications before securing | |||||
Acute hydrocephalus, n (%) | 34 (27) | 15 (63) | 0.002 | 2.34 (0.98–5.58) | 0.054 |
Intracranial hypertension, n (%) | 16 (11) | 8 (33) | 0.029 | ||
Rebleeding, n (%) | 3 (2) | 1 (4) | 0.511 | ||
Interventions before transatlantic transfer | |||||
Mechanical ventilation, n (%) | 52 (42) | 18 (75) | 0.004 | ||
External ventricular drain, n (%) | 47 (38) | 16 (67) | 0.013 | ||
Time from bleeding to coiling, days | 2 (2–3) | 2 (2–3) | 0.385 | ||
Complications during the flight, n (%) | 6 (5) | 1 (4) | > 0.999 | ||