Table 4.
Increase in systolic blood pressure after stroke in comparison with three measures of premorbid blood pressure control in intracerebral haemorrhage versus ischaemic stroke
|
Most-recent premorbid SBP |
10-year average premorbid SBP |
Maximum premorbid SBP |
|||||||
|---|---|---|---|---|---|---|---|---|---|
| Odds ratio (95% CI) | Intracerebral haemorrhage (n) | Ischaemic stroke (n) | Odds ratio (95% CI) | Intracerebral haemorrhage (n) | Ischaemic stroke (n) | Odds ratio (95% CI) | Intracerebral haemorrhage (n) | Ischaemic stroke (n) | |
| ≤0 mm Hg increase (reference group) | 1·0 (0·5–2·1) | 19 | 153 | 1·0 (0·5–2·2) | 16 | 192 | 1·0 (0·6–1·5) | 51 | 385 |
| 0–20 mm Hg increase | 1·1 (0·5–2·4) | 18 | 128 | 2·7 (1·3–5·7) | 26 | 114 | 1·9 (1·0–3·3) | 21 | 85 |
| 21–40 mm Hg increase | 1·2 (0·6–2·5) | 20 | 132 | 1·9 (0·9–4·1) | 18 | 114 | 3·5 (1·7–7·3) | 15 | 32 |
| 41–60 mm Hg increase | 3·4 (1·7–6·8) | 30 | 71 | 5·5 (2·5–12·0) | 22 | 48 | 5·8 (2·4–13·4) | 13 | 17 |
| >60 mm Hg increase | 5·4 (2·5–11·3) | 26 | 39 | 11·1 (5·0–25·0) | 26 | 28 | 24·5 (7·1–105·8) | 13 | 4 |
Proportions of intracerebral haemorrhage versus ischaemic stroke stratified according to the increase between the first post-event SBP and premorbid levels. Numbers for 10-year average premorbid SBP do not add to total because data are for only patients with at least two measures of SBP during the past 10 years. SBP=systolic blood pressure.