Table 3.
Ambulatory blood pressure parameters of the two groups, stratified by age
| Circadian rhythm of blood pressure | Age ≤ 60 | P value | Age>60 | P value | ||||
|---|---|---|---|---|---|---|---|---|
| Overall (n = 58) |
Cognitive dysfunction group (n = 11) | Normal group (n = 47) | Overall (n = 325) |
Cognitive dysfunction group (n = 213) |
Normal group (n = 112) |
|||
| Abnormala | 40 (69.0%) | 7 (63.6%) | 33 (70.2%) | 0.950 | 287 (88.3%) | 204 (95.8%) | 83 (74.1%) | <0.001 |
| Dippers | 18 (31.0%) | 4 (36.4%) | 14 (29.8%) | 0.412 | 38 (11.7%) | 9 (4.2%) | 29 (25.9%) | <0.001 |
| Extreme-dippers | 1 (1.7%) | 0 (0.0%) | 1 (2.1%) | 3 (0.9%) | 2 (0.9%) | 1 (0.9%) | ||
| Non-dippers | 27 (46.6%) | 3 (27.3%) | 24 (51.1%) | 156 (48.0%) | 102 (47.9%) | 54 (48.2%) | ||
| Reverse-dippers | 12 (20.7%) | 4 (36.4%) | 8 (17.0%) | 128 (39.4%) | 100 (46.9%) | 28 (25.0%) | ||
aDefined as the sum of extreme-dippers, non-dippers and reverse-dippers