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Validity of RR series from Apple Watch. CI = Confidence interval.
| RELAX | STRESS | |
|---|---|---|
| Mean (SD) H7 RR intervals (ms) | 869.28 (114.01) | 834.78 (97.43) |
| Mean (SD) AW RR intervals (ms) | 869.23 (114.39) | 834.70 (97.84) |
| CCC (90% CI) | 0.989 (0.981, 0.998) | 0.977 (0.970, 0.985) |
| ICC (90% CI) | 0.989 (0.984, 0.996) | 0.982 (0.977, 0.987) |
| A (90% CI) | 0.993 (0.987, 0.999) | 0.983 (0.975, 0.991) |
| Bias (Out LOA) | 0.049 (3.29%) | 0.078 (3.93%) |
| Mean (SD)% missed RR intervals | 10.98 (9.78) | 9.45 (7.30) |
