TABLE 3.
Predictors of Change in QUIP‐RS Scores; Results from Linear Mixed‐Effects Model; Model Adjusting for LEDD
| Variable | β (standard error) | 95% CI | P‐value |
|---|---|---|---|
| Intercept | 9.662 (4.524) | (0.598, 18.727) | 0.037 |
| Age | −0.105 (0.067) | (−0.24, 0.029) | 0.123 |
| Female sex (Male reference) | −1.7 (1.275) | (−4.264, 0.865) | 0.189 |
| Disease duration | −0.185 (0.101) | (−0.389, 0.019) | 0.074 |
| LEDD (time‐varying) | 0.003 (0.001) | (0, 0.005) | 0.018 |
| QUIP‐RS score (Baseline) | 0.483 (0.056) | (0.37, 0.595) | <0.001 |
| Timepoint (Baseline reference) | 0.905 | ||
| 3 months | −0.077 (1.504) | (−3.05, 2.897) | 0.959 |
| 6 months | −0.407 (1.488) | (−3.349, 2.534) | 0.785 |
| 1 year | 0.686 (1.489) | (−2.257, 3.629) | 0.646 |
| DBS (control reference) | 0.356 (1.624) | (−2.851, 3.563) | 0.827 |
| Treatment (DBS) * Time | 0.796 | ||
| DBS group: 3 months | −1.139 (2.199) | (−5.483, 3.206) | 0.605 |
| DBS group: 6 months | −2.083 (2.227) | (−6.483, 2.317) | 0.351 |
| DBS group: 1 year | −1.744 (2.197) | (−6.085, 2.597) | 0.429 |
Abbreviations: DBS, deep brain stimulation; LEDD, levodopa equivalent daily dose; QUIP‐RS, questionnaire for impulse control disorders in Parkinson's disease rating scale.