Table 3 Comparison between leukoaraiosis severity and BP level together with different BP rhythms
|  | ACI group (N = 542) | SCI group (N = 463) | ||||
|---|---|---|---|---|---|---|
Mild leukoaraiosis | Moderate-severe leukoaraiosis | Non leukoaraiosis | Mild leukoaraiosis | Moderate-severe leukoaraiosis | Non leukoaraiosis | |
(N = 101) | (N = 345) | (N = 96) | (N = 128) | (N = 244) | (N = 91) | |
BP, mmHg | ||||||
 Mean diurnal SBP | 141.6 ± 16.2 | 144.7 ± 18.3 | 142.1 ± 18.5 | 134.6 ± 14.4 | 139.5 ± 18.6** | 133.8 ± 14.0 |
 Mean diurnal DBP | 83.8 ± 11.6 | 80.3 ± 11.5** | 84.8 ± 10.5 | 79.3 ± 9.9 | 78.7 ± 12.0* | 82.1 ± 11.0 |
 Mean diurnal MAP | 103.1 ± 11.8 | 101.8 ± 12.2 | 103.9 ± 11.7 | 99.6 ± 11.0 | 103.4 ± 15.8* | 99.6 ± 10.6 |
 Mean nocturnal SBP | 134.6 ± 18.9 | 141.4 ± 20.7 | 136.7 ± 20.9 | 126.6 ± 17.1 | 136.4 ± 20.4** | 122.6 ± 14.9 |
 Mean nocturnal DBP | 79.9 ± 12.7 | 78.0 ± 12.3** | 81.5 ± 12.2 | 73.7 ± 10.6 | 75.4 ± 13.0 | 74.4 ± 10.4 |
 Mean nocturnal MAP | 98.1 ± 13.4 | 99.1 ± 13.5 | 99.9 ± 13.7 | 91.3 ± 11.3 | 95.8 ± 13.9** | 90.5 ± 10.9 |
 Mean 24-h SBP | 139.6 ± 16.1 | 143.4 ± 18.1 | 140.3 ± 18.7 | 132.2 ± 14.6 | 138.5 ± 18.1** | 130.4 ± 13.6 |
 Mean 24-h DBP | 82.7 ± 11.4 | 79.6 ± 11.1** | 83.8 ± 10.6 | 77.6 ± 9.8 | 77.7 ± 11.8 | 79.7 ± 10.5 |
 Mean 24-h MAP | 101.9 ± 12.2 | 101.9 ± 14.3 | 102.5 ± 11.8 | 97.8 ± 11.2 | 102.6 ± 15.8** | 96.8 ± 10.8 |
NBPDR, % | 4.2 (−0.7–9.6) | 2.9 (− 2.5–7.3) | 3.7 (−1.1–8.2) | 8.1 (1.9–14.4) | 6.7 (0.7–14.1)* | 9.2 (5.1–13.7) |
BP circadian rhythms classification | ||||||
 Reverse-dipper | 27 (26.7%) | 125 (36.2%) | 34 (35.4%) | 19 (14.8%) | 58 (23.8%) | 7 (7.7%) |
 Non-dipper | 52 (51.5%) | 165 (47.8%) | 44 (45.8%) | 58 (45.3%) | 94 (38.5%) | 41 (45.1%) |
 Dipper | 17 (16.8%) | 49 (14.2%) | 17 (17.7%) | 40 (31.3%) | 69 (28.3%) | 40 (44.0%) |
 Extreme-dipper | 5 (5.0%) | 6 (1.7%) | 1 (1.0%) | 11 (8.6%) | 23 (9.4%) | 3 (3.3%) |