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Concordance between Step Count- and Heart Rate-derived physical activity outcomes among participants with valid data.
| Physical Activity Variables | Concordance Coefficient | |||
|---|---|---|---|---|
| N | CCC | SE CCC | 95% CI | |
| Valid Days of Data in First 100 Days | 279 | 0.597 | 0.034 | 0.527–0.659 |
| Mean Daily Steps in Week 1 and Week 13 | 279 | 0.988 | 0.001 | 0.986–0.990 |
| Mean Daily Active Minutes in Week 1 and Week 13 | 279 | 0.990 | 0.001 | 0.988–0.992 |
