Impact of preadmission hypertension statuses on the two poor clinical grading scales of aSAH
| Outcomes | Exposures (n) | Poor outcomes, n (%) | Multivariable model* | |||
| Imputed data (n=4545) | Complete data (n=2925) | |||||
| OR (95% CI) | P value | OR (95% CI) | P value | |||
| Hunt-Hess scale (1–3 vs 4–5) | Non-hypertension (2586) | 263 (10.2) | Reference | Reference | ||
| Hypertension (1959) | 291 (14.9) | 1.319 (1.093 to 1.592) | 0.004 | 1.244 (0.997 to 1.553) | 0.053 | |
| Controlled hypertension (554) | 70 (12.6) | 1.070 (0.800 to 1.432) | 0.648 | 1.072 (0.768 to 1.495) | 0.683 | |
| Uncontrolled hypertension (687) | 133 (19.4) | 1.799 (1.413 to 2.291) | 0.000 | 1.666 (1.261 to 2.201) | 0.000 | |
| Unmonitored hypertension (718) | 88 (12.3) | 1.100 (0.844 to 1.434) | 0.479 | 0.972 (0.700 to 1.348) | 0.863 | |
| WFNS scale (1–3 vs 4–5) | Non-hypertension (2586) | 598 (23.1) | Reference | Reference | ||
| Hypertension (1959) | 586 (29.9) | 1.256 (1.092 to 1.446) | 0.001 | 1.273 (1.070 to 1.513) | 0.006 | |
| Controlled hypertension (554) | 131 (23.6) | 0.891 (0.713 to 1.114) | 0.313 | 0.844 (0.642 to 1.110) | 0.224 | |
| Uncontrolled hypertension (687) | 258 (37.6) | 1.721 (1.425 to 2.079) | 0.000 | 1.907 (1.525 to 2.385) | 0.000 | |
| Unmonitored hypertension (718) | 197 (27.4) | 1.175 (0.969 to 1.426) | 0.101 | 1.085 (0.846 to 1.391) | 0.522 | |
*Multivariable model adjusted for age, sex, ethnicity, body mass index, smoking status, controlled status of hypertension, ischaemic stroke, preadmission use of anti-platelet medication, preadmission use of anticoagulation medication, location of the reputed aneurysm, size of the aneurysm, shape irregularity of the aneurysm and number of intracranial aneurysms.
aSAH, aneurysmal subarachnoid haemorrhage; WFNS, World Federation of Neurological Surgeons.