Table 3.
Grading criteria, means, and mean differences in blood pressure for test device and for both observers
| BP | Grade | Differences between standard and test device (%)
|
Mean ± SD (mmHg) | Mean ± SD of differences (mmHg) | ||
|---|---|---|---|---|---|---|
| ≤5 mmHg | ≤10 mmHg | ≤15 mmHg | ||||
| Observer 1 | ||||||
| SBP | A | 77 | 96 | 100 | 102.9±17.4 | 0.7±4.9 |
| DBP | A | 78 | 97 | 100 | 57.8±8.6 | 0.7±4.7 |
| Observer 2 | ||||||
| SBP | A | 74 | 93 | 99 | 101.4±17.7 | 1.8±4.7 |
| DBP | A | 71 | 96 | 98 | 56.7±9.1 | 1.8±5.0 |
| Final grading | ||||||
| SBP | A | 77 | 96 | 100 | 102.9±17.4 | 0.7±4.9 |
| DBP | A | 78 | 97 | 100 | 57.8±8.6 | 0.7±4.7 |
| Observer comparison | ||||||
| SBP | 95 | 100 | 100 | 1.6±2.2 | ||
| DBP | 93 | 99 | 100 | 0.7±3.1 | ||
Abbreviations: SBP, systolic blood pressure; DBP, diastolic blood pressure; BP, blood pressure; SD, standard deviation.