TABLE 2.
Demographics of aSAH and matched controls included in study
| aSAH cohort | Control cohort | |
|---|---|---|
| Total sample size, n | 829 | 3316 |
| Subset completing phenotype questionnaire | 121 (14.6%) | 619 (18.7%) |
| Age at time of follow‐up | ||
| Mean (±SD) years | 58 (±7.1) | 58 (±7.1) |
| Sex | ||
| Male | 336 (40.5%) | 1348 (40.7%) |
| Female | 493 (59.5%) | 1968 (59.3%) |
| Depression or anxiety | ||
| Present | 326 (39.3%) | 1308 (39.4%) |
| Absent | 503 (60.7%) | 2008 (60.1%) |
| Smoking status | ||
| Current smoker | 138 (16.6%) | 556 (16.8%) |
| Not current smoker | 691 (83.4%) | 2760 (83.2%) |
| Education status | ||
| College or university degree | 223 (26.9%) | 1032 (31.1%) |
| No college or university degree | 605 (73.0%) | 2262 (68.2%) |
| Missing | 1 (0.0%) | 22 (0.0%) |
| Townsend deprivation score | ||
| Mean (±SD) months | −1.0 (±3.2) | −1.3 (±3.2) |
| Time to follow‐up | ||
| Mean (±SD) months | 123 (±116) | – |
| Length of stay | ||
| Median (IQR) days | 7 (11) | – |
| Missing | 304 (36.7%) | – |
| Hydrocephalus | 40 (4.8%) | – |
Abbreviations: aSAH, aneurysmal subarachnoid haemorrhage; IQR, interquartile range; SD, standard deviation.