Table 2.
ABPM parameters of all patients and controls.
| Variable | All (N = 136) | Control (N = 40) | MILD WML (N = 43) | Moderate WML (N = 24) | Severe WML (N = 29) | P |
|---|---|---|---|---|---|---|
| 24-hour ambulatory blood pressure levels | ||||||
| 24hSBP | 145.35 ± 14.28 | 139.78 ± 14.07∗ | 148.30 ± 14.02 | 145.96 ± 12.15 | 148.17 ± 15.00 | 0.026# |
| 24hDBP | 83.60 ± 12.62 | 81.78 ± 11.54 | 84.53 ± 14.58 | 83.17 ± 12.49 | 85.07 ± 11.26 | 0.688 |
| dSBP | 146.38 ± 14.39 | 140.68 ± 14.00∗∗ | 149.98 ± 14.40 | 146.17 ± 11.86 | 149.10 ± 14.99 | 0.017# |
| dDBP | 84.34 ± 12.88 | 82.35 ± 11.85 | 85.14 ± 14.33 | 83.58 ± 12.45 | 86.52 ± 12.55 | 0.571 |
| nSBP | 142.05 ± 18.69 | 136.00 ± 17.42 | 144.53 ± 19.29 | 142.96 ± 17.15 | 145.97 ± 19.56 | 0.097 |
| nDBP | 81.66 ± 13.23 | 79.65 ± 11.04 | 83.00 ± 16.28 | 81.54 ± 13.75 | 82.55 ± 10.59 | 0.687 |
| 24-hour ambulatory blood pressure SD | ||||||
| 24hSBPSD | 15.31 ± 4.63 | 14.94 ± 4.34 | 15.45 ± 5.73 | 14.84 ± 3.06 | 16.00 ± 4.336 | 0.760 |
| 24hDBPSD | 9.95 ± 2.66 | 9.84 ± 2.69 | 9.69 ± 2.59 | 9.94 ± 2.12 | 10.48 ± 3.13 | 0.662 |
| dSBPSD | 14.73 ± 4.56 | 14.52 ± 4.47 | 14.68 ± 5.64 | 14.62 ± 3.06 | 15.21 ± 4.06 | 0.936 |
| dDBPSD | 9.54 ± 2.76 | 9.55 ± 2.96 | 9.20 ± 2.81 | 9.48 ± 2.45 | 10.08 ± 2.71 | 0.630 |
| nSBPSD | 12.93 ± 5.08 | 13.13 ± 6.02 | 12.96 ± 4.58 | 12.75 ± 4.72 | 12.73 ± 4.90 | 0.987 |
| nDBPSD | 9.08 ± 3.97 | 9.50 ± 4.74 | 8.68 ± 3.33 | 9.77 ± 3.94 | 8.52 ± 3.78 | 0.541 |
| 24-hour ambulatory blood pressure CV | ||||||
| 24hSBPCV | 0.107 ± 0.034 | 0.108 ± 0.032 | 0.107 ± 0.043 | 0.102 ± 0.026 | 0.108 ± 0.030 | 0.915 |
| 24hDBPCV | 0.121 ± 0.034 | 0.122 ± 0.033 | 0.119 ± 0.038 | 0.121 ± 0.027 | 0.122 ± 0.035 | 0.979 |
| dSBPCV | 0.102 ± 0.033 | 0.104 ± 0.033 | 0.100 ± 0.040 | 0.100 ± 0.025 | 0.102 ± 0.030 | 0.935 |
| dDBPCV | 0.115 ± 0.037 | 0.118 ± 0.038 | 0.112 ± 0.040 | 0.114 ± 0.031 | 0.118 ± 0.036 | 0.908 |
| nSBPCV | 0.093 ± 0.038 | 0.097 ± 0.044 | 0.093 ± 0.038 | 0.091 ± 0.037 | 0.088 ± 0.031 | 0.775 |
| nDBPCV | 0.113 ± 0.051 | 0.121 ± 0.060 | 0.108 ± 0.046 | 0.123 ± 0.050 | 0.102 ± 0.045 | 0.302 |
Data are shown as mean ± SD and compared by analysis of variance followed by LSD t-test. 24hSBP: 24-hour mean systolic blood pressure; 24hDBP: 24-hour mean diastolic blood pressure; dSBP: daytime mean systolic blood pressure; dDBP: daytime mean diastolic blood pressure; nSBP: nighttime mean systolic blood pressure; nDBP: nighttime mean diastolic blood pressure; 24hDBPSD: 24-hour dynamic blood pressure standard deviation; 24hSBPSD: 24-hour systolic blood pressure standard deviation; 24hDBPSD: 24-hour diastolic blood pressure standard deviation; dSBPSD: daytime systolic blood pressure standard deviation; dDBPSD: daytime diastolic blood pressure standard deviation; nSBPSD: nighttime systolic blood pressure standard deviation; nDBPSD: nighttime diastolic blood pressure standard deviation; 24hSBPCV: 24-hour systolic blood pressure coefficient of variation; 24hDBPCV: 24-hour diastolic blood pressure coefficient of variation; dSBPCV: daytime systolic blood pressure coefficient of variation; dDBPCV: daytime diastolic blood pressure coefficient of variation; nSBPCV: nighttime systolic blood pressure coefficient of variation; nDBPCV: nighttime diastolic blood pressure coefficient of variation. #P < 0.05, control groups vs. WML groups; ∗P < 0.05, control groups vs. mild WML group and severe WML group; ∗∗P < 0.05, control groups vs. mild WML group and severe WML group.