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Pearson correlation between the actigraphy, ring, and smartwatch with the corresponding P values for the considered sleep attributes.
| Devices | Pearson correlation with the actigraphy, r | |||||
|
|
TSTa | P value | SEb | P value | WASOc | P value |
| Oura ring | 0.86 | <.001 | 0.47 | <.001 | 0.41 | <.001 |
| Samsung watch | 0.59 | <.001 | 0.17 | .04 | 0.16 | .06 |
aTST: total sleep time.
bSE: sleep efficiency.
cWASO: wake after sleep onset.
