Table 1.
Differences between eligible participants with and without follow-up data
| Variablea | Included (n= 1133) | Excluded (n= 118) | P-value |
|---|---|---|---|
| Age, years | 66.4 (15.3) | 78.2 (11.7) | <0.001 |
| Female, n (%) | 621 (54.8) | 64 (54.2) | 0.905 |
| Current smokers, n (%) | 218 (19.2) | 17 (14.4) | 0.201 |
| Body mass index | 27.2 (4.1) | 27.5 (4.3) | 0.478 |
| Baseline MMSE scoreb | 26.3 (25 to 29) | 23.2 (21 to 27) | <0.001 |
| Years in educationb | 6.8 (5 to 8) | 5.0 (3 to 5) | <0.001 |
| Years of follow-up | 8.1 (1.5) | 2.9 (2.5) | <0.001 |
| Systolic blood pressure | 145.6 (21.4) | 152.2 (23.7) | 0.002 |
| Diastolic blood pressure | 83.1 (9.5) | 83.9 (9.3) | 0.345 |
| IAD ≥10 mmHg | 2.4 (4.8) | 2.7 (7.8) | 0.564 |
| Hypertension, n (%) | 834 (73.6) | 94 (79.7) | 0.153 |
| Diabetes, n (%) | 143 (12.6) | 15 (12.7) | 0.978 |
| Vascular disease, n (%) | 177 (15.6) | 36 (30.5) | <0.001 |
| Cerebrovascular disease, n (%) | 49 (4.3) | 18 (15.3) | <0.001 |
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.