Table 2.
Summary of regression analyses
| log(T) = α TRS + β | Spectral Method | Transducer | |||
|---|---|---|---|---|---|
| T | α | β | r | ||
| Mean displacement (95% CI) | 0.467 (0.278–0.657) | −1.899 (−2.277 to −1.521) | 0.720 | Morlet wavelet | Accelerometer |
| Mean displacement (95% CI) | 0.481 (0.300–0.662) | −1.978 (−2.339 to −1.617) | 0.745 | FFT | Accelerometer |
| Mean rotation (95% CI) | 0.631 (0.468–0.794) | −1.456 (−1.770 to −1.142) | 0.852 | Morlet wavelet | Gyroscope |
| Mean rotation (95% CI) | 0.637 (0.488–0.786) | −1.503 (−1.800 to −1.207) | 0.874 | FFT | Gyroscope |
| Maximum burst displacement (95% CI) | 0.450 (0.263–0.637) | −1.601 (−1.977 to −1.233) | 0.712 | Morlet wavelet | Accelerometer |
| Maximum burst rotation (95% CI) | 0.650 (0.467–0.833) | −1.274 (−1.639 to −0.910) | 0.831 | Morlet wavelet | Gyroscope |
r, correlation coefficient, which were all significant at P < 0.0001; T, transducer measure of tremor amplitude; TRS, tremor rating.