Table 5.
Fixed effects using linear mixed models.
| Group | Num DF | Den DF | F/t value | p value |
|---|---|---|---|---|
| TD vs. NTD vs HC | 2 | 101 | 6.26 | 0.0027 |
| Site | 2 | 206 | 871.4 | <0.0001 |
| Site 1 vs 3 | −6.20 | <0.0001 | ||
| Site 2 vs 3 | −38.5 | <0.0001 | ||
| TD vs HC | 1 | 67 | 8.78 | 0.0042 |
| Site | 2 | 136 | 457.74 | <0.0001 |
| Site 1 vs 3 | −4.51 | <0.0001 | ||
| Site 2 vs 3 | −28.16 | <0.0001 | ||
| NTD vs HC | 1 | 67 | 6.22 | 0.0151 |
| Site | 2 | 136 | 501.15 | <0.0001 |
| Site 1 vs 3 | −4.73 | <0.0001 | ||
| Site 2 vs 3 | −29.48 | <0.0001 | ||
| TD + NTD vs HC | 1 | 102 | 12.18 | 0.0007 |
| Site | 2 | 206 | 870.49 | <0.0001 |
| Site 1 vs 3 | −6.20 | <0.0001 | ||
| Site 2 vs 3 | −38.83 | <0.0001 | ||
| TD vs NTD | 1 | 68 | 0.62 | 0.436 |
| Site | 2 | 138 | 1050.4 | <0.0001 |
| Site 1 vs 3 | −6.74 | <0.0001 | ||
| Site 2 vs 3 | 2 | 138 | −42.63 | <0.0001 |
Abbreviations: TD = schizophrenia patients with tardive dyskinesia (TD), NTD = schizophrenia patients without TD, HC = healthy controls, Num DF refers to the number of degrees of freedom in the model, Den DF refers to the number of degrees of freedom associated with the model errors, F/t value and p value are based on the linear mixed models.