Table 2.
Hazard ratios and 95% confidence intervals of composite events and stroke recurrence by DBP categories.
| Composite events | Stroke Recurrence | |||||||
|---|---|---|---|---|---|---|---|---|
| Cases | Event rate | Unadjusted HR (95% CI) | Adjusted HR (95% CI) | Cases | Event rate | Unadjusted HR (95% CI) | Adjusted HR (95% CI) | |
| TOTAL COHORT | ||||||||
| DBP <60 mmHg | 19/119 | 15.97% | 4.86 (2.67–8.83) |
4.65 (2.51–8.52) |
11/119 | 9.24% | 1.03 (0.54–1.98) |
0.90 (0.46–1.74) |
| DBP 60–70 mmHg | 10/219 | 4.57% | 1.68 (0.82–3.47) |
1.40 (0.67–2.91) |
8/219 | 3.65% | 0.60 (0.29–1.26) |
0.53 (0.25–1.11) |
| DBP 70–80 mmHg (reference) |
28/1,026 | 2.73% | 1 | 1 | 61/1,026 | 5.95% | 1 | 1 |
| DBP 80–90 mmHg | 29/764 | 3.80% | 1.32 (0.79–2.23) |
1.57 (0.92–2.67) |
45/764 | 5.89% | 0.93 (0.63–1.37) |
1.03 (0.69–1.52) |
| DBP ≥90 mmHg | 9/197 | 4.57% | 1.64 (0.77–3.47) |
1.91 (0.88–4.42) |
13/197 | 6.60% | 1.04 (0.57–1.89) |
1.15 (0.62–2.12) |
| AGE <60 YEARS | ||||||||
| DBP <60 mmHg | 3/28 | 10.71% | 5.95 (1.48–23.96) |
3.63 (0.80–16.41) |
2/28 | 7.14% | 2.26 (0.47–10.78) |
1.91 (0.39–9.26) |
| DBP 60–70 mmHg | 3/57 | 5.26% | 3.31 (0.83–13.25) |
2.58 (0.62–10.63) |
2/57 | 3.51% | 1.54 (0.33–7.26) |
1.28 (0.27–6.10) |
| DBP 70–80 mmHg (reference) |
6/362 | 1.66% | 1 | 1 | 8/362 | 2.21% | 1 | 1 |
| DBP 80–90 mmHg | 10/370 | 2.70% | 1.60 (0.58–4.39) |
1.34 (0.48–3.81) |
19/370 | 5.14% | 2.32 (1.01–5.31) |
2.31 (1.00–5.34) |
| DBP ≥ 90 mmHg | 3/111 | 2.70% | 1.60 (0.40–6.41) | 1.07 (0.26–4.39) | 8/111 | 7.21% | 3.17 (1.19–5.45) | 2.97 (1.10–8.05) |
| AGE ≥ 60 YEARS | ||||||||
| DBP <60 mmHg | 16/91 | 17.58% | 4.29 (2.21–8.33) |
4.80 (2.44–9.42) |
9/91 | 9.89% | 0.78 (0.37–1.61) |
0.66 (0.26–1.67) |
| DBP 60–70 mmHg | 7/162 | 4.32% | 1.29 (0.55–3.03) |
1.30 (0.55–3.07) |
6/162 | 3.70% | 0.45 (0.19–1.04) |
0.74 (0.46–1.19) |
| DBP 70–80 mmHg (reference) |
22/664 | 3.31% | 1 | 1 | 53/664 | 7.98% | 1 | 1 |
| DBP 80–90 mmHg | 19/394 | 4.82% | 1.37 (0.74–2.53) |
1.31 (0.70–2.45) |
26/394 | 6.60% | 0.75 (0.47–1.20) |
0.45 (0.19–1.06) |
| DBP ≥90 mmHg | 6/86 | 6.98% | 2.04 (0.82–5.03) |
1.72 (0.68–4.34) |
5/86 | 5.81% | 0.67 (0.27–1.68) |
0.66 (0.26–1.67) |
Adjusted for age, sex, medical history (hypertension, diabetes mellitus, dyslipidemia, and coronary heart disease), and medication at discharge (antiplatelet, antilipid, and antihypertension).
DBP, diastolic blood pressure; HR, hazard ratio; CI, confidence interval.