Table 2.
Age and sex-adjusted partial correlations of biochemical and clinical parameters.
| Serum uric acid | Serum allantoin | Serum allantoin/uric acid ratio | CSF uric acid | CSF allantoin | CSF allantoin/uric acid ratio | |
|---|---|---|---|---|---|---|
| Disease duration | −0.14 | 0.11 | 0.18 | 0.06 | 0.50*** | 0.37** |
| MDS-UPDRS III | 0.02 | −0.13 | −0.08 | −0.05 | 0.03 | 0.02 |
| SCOPA-AUT | −0.02 | 0.25* | 0.31** | −0.07 | 0.23 | 0.31* |
| MoCA | 0.13 | −0.03 | −0.12 | 0.26 | 0.19 | 0.01 |
| UPSIT | 0.03 | 0.02 | −0.09 | 0.35* | 0.06 | −0.27 |
| DaTscan (putaminal SBR) | −0.03 | 0.05 | 0.04 | −0.04 | −0.14 | −0.07 |
| RBD | −0.04 | 0.19 | 0.23* | −0.16 | 0.21 | 0.32* |
Partial correlation coefficients adjusted for age and sex together with statistical significance are shown; *p < 0.05; **p < 0.01; ***p < 0.001; significant correlations are in bold.
MDS-UPDRS Movement Disorders Society-Unified Parkinson’s Disease Rating Scale, SCOPA-AUT Scales for Outcomes in Parkinson Disease-Autonomic, MoCA Montreal Cognitive Assessment, UPSIT University of Pennsylvania Smell Identification Test, SBR specific biding ratio, RBD REM sleep behavioral disorder, CSF cerebrospinal fluid.