Table 1.
Participants’ Characteristics Based upon Inclusion in Analysis at the First Evaluation When Blood Pressure Was Collected*
| Characteristic | Included in Analysis (n=2721) | Not Included due to Missing Values (n=424) | P-value |
|---|---|---|---|
| Cognitive score, median (IQR) | 68 (62, 72) | 62 (53, 68) | < 0·001 |
| Age, median (IQR) | 76·0 (72·6, 80·4) | 78·9 (74·6, 85·3) | < 0·001 |
| Female, N (%) | 1814 (66·7) | 281 (66·7) | 0·999 |
| Education, years, median (IQR) | 12 (9, 13) n=2704 |
10 (8, 12) n=397 |
< 0·001 |
| BMI, kg/m2, median (IQR) | 28·4 (24·9, 32·5) n=2662 |
27·3 (23·8, 32·2) n=240 |
0·020 |
| Systolic blood pressure, mmHg, median (IQR) | 145·7 (132·0, 160·0) n=2490 |
144·0 (130·0, 159·5) n=148 |
0·609 |
| Diastolic blood pressure, mmHg, median (IQR) | 80·0 (72·0, 88·0) n=2490 |
80·0 (70·0, 90·0) n=148 |
0·851 |
| Drink alcohol, N (%) | 1114 (42·5) n=2620 |
172 (45·9) n=375 |
0·221 |
| Smoker, N (%) | 1612 (59·7) n=2698 |
237 (56·6) n=419 |
0·219 |
| Antihypertensive medication, N (%) | 1470 (57·9) n=2538 |
129 (54·9) n=235 |
0·371 |
| Depression, N (%) | 321 (11·9) n=2693 |
68 (16·4) n=414 |
0·013 |
| Heart attack, N (%) | 401 (14·9) n=2688 |
69 (16·5) n=419 |
0·420 |
| Stroke, N (%) | 387 (14·3) n=2698 |
101 (24·2) n=417 |
< 0·001 |
| Cardiovascular heart disease, N (%) | 856 (31·7) n=2703 |
138 (32·8) n=421 |
0·653 |
| Diabetes mellitus, N (%) | 790 (29·3) n=2698 |
144 (34·4) n=419 |
0·039 |
| Cancer, N (%) | 403 (15·0) n=2689 |
39 (9·3) n=418 |
0·002 |
| Parkinson’s disease, N (%) | 18 (0·6) n=2700 |
8 (1·9) n=421 |
0·017 |
*
The data shown was collected at the 2nd follow-up (six years) after baseline for the original cohort and the baseline visit for the enrichment cohort. A few participants did not complete the full assessments at their first evaluations.
IQR = interquartile range