Table 3.
Linear model generalized estimating equations analyses for the association between free thyroxine and associating parameters. Parameters standardized to the same mean and SD (mean 0, SD 1.0) for comparison and analyzed separately.
| Association between free thyroxine and parameters | Unstandardized beta | 95% CI | P value | |
| Thyrotoxicosis group only |
|
|
|
|
|
|
Hyperthyroid Symptom Scale | .504 | 0.333-0.674 | <.001 |
|
|
On-site resting heart rate | .362 | 0.122-0.602 | .003 |
|
|
WD-rHR-owna | .465 | 0.300-0.630 | <.001 |
|
|
WD-rHR-Fitbitb | .513 | 0.331-0.694 | <.001 |
| All groups |
|
|
|
|
|
|
Hyperthyroid Symptom Scale | .541 | 0.394-0.687 | <.001 |
|
|
On-site resting heart rate | .396 | 0.204-0.588 | <.001 |
|
|
WD-rHR-own | .492 | 0.367-0.616 | <.001 |
|
|
WD-rHR-Fitbit | .515 | 0.375-0.656 | <.001 |
aWD-rHR-own: resting heart rate from wearable device derived by own algorithm.
bWD-rHR-Fitbit: resting heart rate from wearable device derived by Fitbit algorithm.