Table 2.
Concordance between average real variability computed from full and reduced recordings in the discovery database
| Minimum number of blood pressure readings | Systolic blood pressure | Diastolic blood pressure | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Mean ARV (SD) | Delta, mm Hg | RC, mm Hg | RRC, % | r | Mean ARV (SD) | Delta, mm Hg | RC, mm Hg | RRC, % | r | |
| 80 | 11.74 (2.45) | NA | NA | NA | NA | 7.79 (1.36) | NA | NA | NA | NA |
| 72 | 11.95 (2.55) | 0.20 | 1.58 | 16.0 | 0.95 | 7.97 (1.42) | 0.18 | 1.07 | 19.6 | 0.93 |
| 64 | 12.21 (2.66) | 0.47 | 2.33 | 23.4 | 0.90 | 8.16 (1.50) | 0.37 | 1.54 | 28.0 | 0.86 |
| 56 | 12.54 (2.90) | 0.80 | 3.04 | 29.5 | 0.85 | 8.42 (1.62) | 0.63 | 1.90 | 33.5 | 0.81 |
| 48 | 12.84 (3.00) | 1.09 | 3.70 | 35.9 | 0.79 | 8.67 (1.72) | 0.89 | 2.36 | 41.2 | 0.73 |
| 40 | 13.12 (3.21) | 1.37 | 4.45 | 42.2 | 0.72 | 8.93 (1.86) | 1.14 | 2.81 | 47.8 | 0.66 |
| 32 | 13.48 (3.40) | 1.74 | 7.28 | 77.6 | 0.26 | 9.23 (2.01) | 1.45 | 4.41 | 84.1 | 0.18 |
Abbreviations: ARV, average real variability over 24 hours; Delta, ARV based on reduced recording minus ARV based on full recording (at least 80 measurements); NA, not applicable; RC, repeatability coefficient for the correspondence between the reduced and full recordings; RRC, relative repeatability coefficient for the correspondence between the full and reduced recordings.