Table 4.
Correlation and proportion 30 between the 24-hour mean systolic blood pressure (SBP) and the SBP at specific time points according to chronic kidney disease stage
| Time point | Total |
Stage 2 |
Stage 3 |
Stage 4 |
||||
|---|---|---|---|---|---|---|---|---|
| ra | P30, %b | ra | P30, %b | ra | P30, %b | ra | P30, %b | |
| 6:30 PM | 0.746 | 96.4 | ||||||
| 7:00 AM | 0.683 | 95.4 | 0.576 | 95.3 | 0.678 | 95.8 | 0.762 | 94.7 |
| 7:30 AM | 0.529 | 92.5 | ||||||
| 2:00 PM | 0.521 | 92.2 | 0.524 | 91.8 | 0.521 | 91.3 | 0.567 | 94.8 |
| 3:00 PM | 0.580 | 91.8 | 0.596 | 94.2 | ||||
| 9:30 PM | 0.668 | 95.5 | 0.665 | 95.0 | 0.645 | 95.4 | 0.708 | 96.4 |
| 10:00 PM | 0.651 | 94.3 | ||||||
| Office mean SBP | 0.532 | 95.5 | 0.505 | 96.6 | 0.500 | 95.0 | 0.592 | 95.0 |
P30, proportion 30.
a
Pearson correlation coefficient of SBP at each time point and 24-hour mean SBP.
b
Proportion of patients included within 30% of the mean SBP for 24 hours according to the Passing-Bablok method. All of the above parameters were statistically significant (p < 0.001).