Table 3. Blood pressure variability.
| Total | NT | MHT | WCH | SHT | p | |
|---|---|---|---|---|---|---|
| SD of day SBP | 15.4±5.9 | 16.0±5.9 | 15.6±6.0 | 15.7±6.1 | 15.0±5.8* | 0.075 |
| SD of day DBP | 12.8±5.3 | 12.7±5.1 | 13.7±6.2 | 12.8±5.2 | 12.7±5.2 | 0.264 |
| SD of night SBP | 11.0±5.3 | 10.9±5.1 | 10.8±4.8 | 10.5±5.1 | 11.4±5.5† | 0.114 |
| SD of night DBP | 8.4±4.2 | 8.1±4.1 | 8.7±4.5 | 7.8±3.1 | 8.8±4.5*† | 0.004 |
| ARV of 24-h SBP | 19.1±9.4 | 16.9±8.4 | 17.7±7.8† | 22.7±10.8* | 19.1±9.2*† | <0.001 |
| ARV of 24-h DBP | 15.1±7.4 | 12.6±6.0 | 14.5±6.8*† | 17.8±10.0* | 15.5±6.5*† | <0.001 |
| ARV of day SBP | 18.1±9.2 | 16.5±8.4 | 16.8±7.8† | 21.6±10.5* | 17.8±9.0*† | <0.001 |
| ARV of day DBP | 14.3±7.4 | 12.2±6.0 | 13.7±7.1*† | 17.1±9.8* | 14.4±6.6*† | <0.001 |
| CoV of day SBP | 0.11±0.04 | 0.13±0.05 | 0.11±0.04*† | 0.12±0.05* | 0.10±0.04*† | <0.001 |
| CoV of day DBP | 0.15±0.07 | 0.17±0.07 | 0.15±0.07* | 0.16±0.07 | 0.13±0.06*† | <0.001 |
| CoV of night SBP | 0.09±0.04 | 0.10±0.05 | 0.08±0.04* | 0.04±0.02 | 0.09±0.04* | <0.001 |
| CoV of night DBP | 0.11±0.05 | 0.12±0.06 | 0.11±0.06 | 0.11±0.05 | 0.10±0.05* | 0.010 |
Values are presented as mean±standard deviation. *p<0.05 vs. NT, †p<0.05 vs. WCH. NT: normotension, MHT: masked hypertension, WCH: white coat hypertension, SHT: sustained hypertension, SD: standard deviation, SBP: systolic blood pressure, DBP: diastolic blood pressure, ARV: average real variability, CoV: coefficient of variation