Table 2. Model parameter estimates of the diastolic and systolic 24-h ABPM with 1000 nonparametric bootstrap procedures of Study 1.
| Parameter | Annotations | Estimate (SEM%) | Shrinkage% (P value) | Bootstrap median | Bootstrap 95% CI |
|---|---|---|---|---|---|
| Cyclic fluctuations model parameters | |||||
| Base1 | Rhythm-adjusted 24-h mean SBP (mmHg) | 140 (1.8) | 140 | 136–145 | |
| Base2 | Rhythm-adjusted 24-h mean DBP (mmHg) | 89.5 (1.8) | 89.6 | 86.7–92.6 | |
| A11 | Amplitude first cosine term of SBP | 7.52 (8.7) | 7.52 | 6.37–8.79 | |
| A21 | Amplitude second cosine term of SBP | 8.64 (9.1) | 8.58 | 6.89–10.19 | |
| A12 | Amplitude first cosine term of DBP | 5.61 (7.6) | 5.60 | 4.70–6.50 | |
| A22 | Amplitude second cosine term of DBP | 6.27 (9.3) | 6.32 | 5.21–7.50 | |
| PHS1 | Phase-shift first cosine term | −0.652 (1.3) | −0.651 | −0.668–0.862 | |
| PHS2 | Phase-shift second cosine term | 3.61 (0.8) | 3.61 | 3.50–3.69 | |
| Inter-individual variability | |||||
| ωBase1 (CV%) | Interindividual variability of Base1 | 0.079 (20.6) | −0.68 (0.999) | 0.079 | 0.061–0.094 |
| ωBase2 (CV%) | Interindividual variability of Base2 | 0.12 (21.3) | −0.48 (0.999) | 0.12 | 0.094–0.146 |
| ωA11 (CV%) | Interindividual variability of A11 | 5.63 (31.8) | 20.5 (0.232) | 5.47 | 3.42–7.14 |
| ωA21 (CV%) | Interindividual variability of A21 | 4.73 (33.0) | 17.9 (0.282) | 4.74 | 3.12–6.91 |
| ωA12 (CV%) | Interindividual variability of A12 | 6.58 (37.6) | 21.6 (0.234) | 6.39 | 3.20–8.70 |
| ωA22 (CV%) | Interindividual variability of A22 | 6.71 (35.6) | 16.6 (0.421) | 6.36 | 4.05–8.83 |
| ωPHS1 (CV%) | Interindividual variability of PHS1 | 10.9 (27.5) | 4.96 (0.933) | 10.05 | 7.0–13.3 |
| ωPHS2 (CV%) | Interindividual variability of PHS2 | 1.24 (37.6) | 0.23 (0.988) | 1.17 | 0.59–1.6 |
| Residual variability | |||||
| σSBP | Intraindividual residual variability of SBP (mmHg) | 12.85 (6.5) | 2.93 | 12.9 | 12.1–13.7 |
| σDBP | Intraindividual residual variability of DBP (mmHg) | 9.11 (7.9) | 2.96 | 9.10 | 8.46–9.79 |
SEM%, standard error %; 95% CI, 95% confidence interval; CV%, coefficient of variation; SBP, systolic blood pressure; DBP, diastolic blood pressure; 24-h ABPM, 24-h ambulatory blood pressure monitoring.