Table 2.
Agreements of RR and HR between radar and the conventional monitor according to the postures.
| CCC (95% CI) | ICC (95% CI) | Mean bias (95% CI) | Lower LOA | Upper LOA | Beta, p-values* | |
|---|---|---|---|---|---|---|
| Means | ||||||
| RR | ||||||
| all | 0.969 (0.951–0.981) | 0.970 (0.571–0.992) | 0.837 (0.659–1.015) | − 0.42 | 0.21 | − 0.071, < 0.001 |
| Supine | 0.970 (0.952–0.981) | 0.971 (0.488–0.992) | 0.862 (0.694–1.029) | − 0.32 | 2.04 | − 0.045, < 0.001 |
| Sitting | 0.958 (0.932–0.975) | 0.959 (0.825–0.984) | 0.802 (0.524–1.082) | − 1.17 | 2.77 | − 0.105, < 0.001 |
| HR | ||||||
| all | 0.845 (0.772–0.897) | 0.848 (0.747–0.911) | 1.070 (− 0.397–2.537) | -9.30 | 11.44 | − 0.372, < 0.001 |
| Supine | 0.819 (0.724–0.883) | 0.822 (0.703–0.896) | 1.613 (0.022–3.204) | − 9.64 | 12.86 | − 0.338, < 0.001 |
| Sitting | 0.751 (0.622–0.841) | 0.755 (0.605–0.853) | 0.322 (− 1.697–2.341) | − 13.95 | 12.58 | − 0.361, < 0.001 |
| Individual | ||||||
| RR | ||||||
| all | 0.923 (0.919–0.926) | 0.923 (0.849–0.953) | 0.843 (0.801–0.883) | − 2.21 | 3.90 | − 0.067, < 0.001 |
| Supine | 0.941 (0.937–0.945) | 0.941 (0.826–0.971) | 0.882 (0.849–0.914) | − 1.56 | 3.33 | − 0.039, < 0.001 |
| Sitting | 0.903 (0.896–0.910) | 0.903 (0.848–0.933) | 0.800 (0.752–0.849) | − 2.80 | 4.40 | − 0.086, < 0.001 |
| HR | ||||||
| all | 0.749 (0.738–0.760) | 0.749 (0.731–0.766) | 1.129 (0.941–1.316) | − 12.80 | 15.05 | − 0.284, < 0.001 |
| Supine | 0.787 (0.774–0.799) | 0.787 (0.755–0.814) | 1.549 (1.381–1.717) | − 10.88 | 13.98 | − 0.278, < 0.001 |
| Sitting | 0.706 (0.688–0.724) | 0.707 (0.686–0.726) | 0.676 (0.469–0.883) | − 14.64 | 15.99 | − 0.288, < 0.001 |
RR respiratory rate, HR heart rate, CCC concordance correlation coefficient, LOA limit of agreement.
*Beta coefficients and p-values were derived from a linear regression analysis between the biases and the average between radar and the conventional monitor.