Table 2.
Characteristics of participants according to systolic inter-arm blood pressure difference (IAD) by IAD status ≥10 mmHg or <10 mmHg
| Variablea | IAD ≥10 mmHg (n= 212) | IAD <10 mmHg (n= 921) | P-value |
|---|---|---|---|
| Age, years | 69.3 (12.9) | 65.7 (15.7) | 0.003 |
| Female, n (%) | 117 (55.2) | 504 (54.7) | 0.902 |
| Current smokers, n (%) | 38 (17.9) | 180 (19.5) | 0.590 |
| Body mass index | 26.8 (16.2) | 27.2 (27.0) | 0.210 |
| Baseline MMSE scoreb | 26 (24 to 28) | 27 (25 to 29) | 0.025 |
| Baseline Trails A scoreb | 76 (46 to 118) | 65 (41 to 102) | 0.003 |
| Baseline Trails B scoreb | 157 (98 to 246) | 138 (84 to 227) | 0.026 |
| Years in educationb | 5 (4 to 8) | 5 (5 to 8) | 0.167 |
| Years of follow-up | 7.8 (7.6) | 8.2 (8.1) | 0.006 |
| Systolic blood pressure | 158.2 (20.9) | 142.6 (20.5) | <0.001 |
| Diastolic blood pressure | 87.0 (9.0) | 82.1 (9.3) | <0.001 |
| Hypertension, n (%) | 187 (88.2) | 647 (70.3) | <0.001 |
| Diabetes, n (%) | 31 (14.6) | 112 (12.2) | 0.330 |
| Vascular disease, n (%) | 30 (14.2) | 147 (16.0) | 0.513 |
| Cerebrovascular disease, n (%) | 11 (5.2) | 38 (4.1) | 0.493 |
a
Continuous data reported as mean (standard deviation).
b
Non-normally distributed continuous data reported as median (interquartile range). IAD = systolic inter-arm blood pressure difference. MMSE = mini mental state examination.