Table 1.
Sub-group characteristics of selected groups with confirmed non-traumatic subarachnoid hemorrhage registered in the Danish National Patient Register
| Validated ntSAH n=537 |
% (95% CI) | Sex | % (n) | 95% CI | Age (median) | IQR |
|---|---|---|---|---|---|---|
| Perimesencephalic hemorrhage (n=28) |
5.2 (3.4–7.1) | F | 32.1 (9) | 14.8–49.4 | 63.0 | 43–71 |
| M | 67.9 (19) | 50.5–85.1 | 52.0 | 43–65 | ||
| Vascular malformation (n=7) | 1.3 (0.3–2.3) | F | 14.3 (1) | 0.0–40.0 | 33.0 | 33–33 |
| M | 85.7 (6) | 59.8–100.0 | 63.5 | 56–71 | ||
| Prehospital cardiac arrest (n=12) |
2.2 (1.0–3.5) | F | 58.3 (7) | 30.4–86.2 | 62.0 | 58–66 |
| M | 41.7 (5) | 13.7–69.6 | 51.0 | 42–58 | ||
| Recurrent ntSAH (n=8) |
1.5 (0.5–2.5) | F | 75.0 (6) | 45.0–100.0 | 56.0 | 48–76 |
| M | 25.0 (2) | 0.0–55.0 | 53.0 | 36–70 |
Abbreviations: ntSAH, non-traumatic subarachnoid hemorrhage; CI, Confidence interval; n, number; IQR, inter quartile range; F, female; M, male.