Table 4.
Timing of Home BP Measurement and Prediction of Ambulatory BP
| Home BP Timing in relation to end of dialysis | |||||
|---|---|---|---|---|---|
| Parameter | 44-h Ambulatory BP | First 1/3 | Second 1/3 | Last 1/3 | Overall |
| Systolic BP | |||||
| BP (mmHg) | 139.7 | 148.2 | 152.8 | 161.2 | 153.8 |
| 95% CI | 137.7 to 141.7 | 145.1 to 151.3 | 150.0 to 155.6 | 158.2 to 164.1 | 151.0 to 156.6 |
| Mean (ambulatory-home) | −7.9 | −13.2 | −21.6 | −14.1 | |
| 95% CI of diff (ABP-home) | −10.5 to −5.3 | −15.4 to −11.0 | −23.9 to −19.2 | −16.2 to −12.0 | |
| SD between patients | 12.3 | 11.6 | 11.7 | 11.8 | |
| SD between methods (ABP, home) | 5.2 | 4.8 | 5.7 | 4.6 | |
| SD residual | 13.8 | 13.0 | 13.0 | 12.2 | |
| - Log likelihood | −3101.0 | −3057.2 | −3063.5 | −3019.1 | |
| BIC | 6235.0 | 6147.3 | 6159.9 | 6071.1 | |
| Order of model fit compared to ambulatory | 4 | 2 | 3 | 1 | |
| Diastolic BP | |||||
| BP (mmHg) | 79.3 | 82.9 | 84.7 | 87.4 | 84.9 |
| 95% CI | 77.5 to 81.1 | 80.9 to 84.8 | 82.8 to 86.6 | 85.5 to 89.4 | 83.0 to 86.8 |
| Mean (ambulatory-home) | −3.7 | −5.5 | −8.3 | −5.7 | |
| 95% CI of diff (ABP-home) | −5.1 to −2.3 | −6.7 to −4.4 | −9.5 to −7.1 | −6.9 to −4.6 | |
| SD between patients | 9.9 | 10.1 | 10.2 | 10.1 | |
| SD between methods (ABP, home) | 3.5 | 2.5 | 2.7 | 2.8 | |
| SD residual | 7.6 | 6.9 | 6.8 | 6.3 | |
| - Log likelihood | −2716.0 | −2650.9 | −2646.3 | −2606.8 | |
| BIC | 5465.0 | 5334.8 | 5325.6 | 5246.7 | |
| Order of model fit compared to ambulatory | 4 | 3 | 2 | 1 | |
| BIC = Bayesian information criterion. The strength of evidence for differences between model fits was very strong | |||||