Table 1 Risk factors, interleukin (IL) 1β genotypes and alleles in patients with aneurysmal subarachnoid haemorrhage and their controls.
| Controls (n = 231) | Cases (n = 231) | p Value | |
|---|---|---|---|
| Age (years) (mean (SD)) | 50.4 (12.4) | 49.9 (12.7%) | *0.66 |
| Female | 132 (57.1%) | 132 (57.1%) | †1.00 |
| Hypertension | 80 (34.6%) | 125 (54.1%) | †<0.00001 |
| Smoking | 98 (42.4%) | 147 (63.6%) | †<0.00001 |
| Excessive alcohol intake | 10 (4.3%) | 35 (15.2%) | †0.0001 |
| IL1β genotype | |||
| CC | 111 (48.1%) | 100 (43.3%) | †CC v CT+TT, p = 0.3 |
| CT | 106 (45.8%) | 99 (42.85) | †CC+CT v TT, p = 0.006 |
| TT | 14 (6.1%) | 32 (13.9%) | |
| IL1β alleles | |||
| T allele frequency | 134 (29.0%) | 163 (35.3%) | †C v T, p = 0.041 |
Values are n (%) unless stated otherwise.
*Student t test.
†χ2 test.