Table 3.
Mixed model analyses
| Roving Standard MMN indices | Contrast | F/t (df), p |
|---|---|---|
| MMN3,8,33 | Effect of Group: | F(1,66.62)=4.14, p=0.05 |
| Effect of Standard Repetition: | F(2,327.00)=37.44, p<0.001 | |
| Effect of Time: | F(1,347.64)=0.03, p=0.87 | |
| Group × Time: | F(1,347.64)=4.82, p=0.03 | |
| Reverse Helmert Contrasts | ||
| MMN3 vs MMN8 | t(327.00)=−1.13, p=0.26 | |
| MMN3 vs. MMN8 × Group: | t(327.00)=1.54, p=0.12 | |
| MMN3 vs. MMN8 × Time: | t(327.00)=0.59, p=0.56 | |
| MMN3 vs. MMN8 × Group × Time: | t(327.00)=−0.82, p=0.42 | |
| MMN3,8 vs. MMN33: | t(327.00)=−8.58, p<0.001 | |
| MMN3,8 vs. MMN33 × Group: | t(327.00)=−1.67, p=0.10 | |
| MMN3,8 vs. MMN33 × Time: | t(327.00)=−0.27, p=0.79 | |
| MMN3,8 vs. MMN33 × Group × Time: | t(327.00)=1.10, p=0.27 | |
| RP3,8,33 | Effect of Group: | F(1,73.12)=0.06, p=0.81 |
| Effect of Standard Repetition: | F(2,332.88)=35.27, p<0.001 | |
| Effect of Time: | F(1,346.82)=2.00, p=0.16 | |
| Group × Time: | F(1,346.82)=1.75, p=0.19 | |
| Reverse Helmert Contrasts | ||
| RP3 vs. RP8: | t(332.88)=2.34, p=0.02 | |
| RP3 vs. RP8 × Group: | t(332.88)=−0.72, p=0.47 | |
| RP3 vs. RP8 × Time: | t(332.88)=−0.01, p=0.99 | |
| RP3 vs. RP8 × Group × Time: | t(332.88)=0.93, p=0.36 | |
| RP3,8 vs. RP33: | t(332.88)=8.07, p<0.001 | |
| RP3,8 vs. RP33 × Group: | t(332.88)=0.62, p=0.54 | |
| RP3,8 vs. RP33 × Time: | t(332.88)=0.84, p=0.40 | |
| RP3,8 vs. RP33 × Group × Time: | t(332.88)=−0.19, p=0.85 | |
| DN3,8,33 | Effect of Group: | F(1,70.86)=4.39, p=0.04 |
| Effect of Standard Repetition: | F(2,330.38)=15.13, p<0.001 | |
| Effect of Time: | F(1,342.79)=0.38, p=0.51 | |
| Group × Time: | F(1,342.79)=2.28, p=0.13 | |
| Reverse Helmert Contrasts | ||
| DN3 vs. DN8: | t(330.38)=−0.12, p=0.91 | |
| DN3 vs. DN8 × Group: | t(330.38)=1.17, p=0.24 | |
| DN3 vs. DN8 × Time: | t(330.38)=1.06, p=0.29 | |
| DN3 vs. DN8 × Group × Time: | t(330.38)=−0.70, p=0.48 | |
| DN3,8 vs. DN33: | t(330.38)=−5.50, p<0.001 | |
| DN3,8 vs. DN33 × Group: | t(330.38)=−1.84, p=0.07 | |
| DN3,8 vs. DN33 × Time: | t(330.38)=0.37, p=0.71 | |
| DN3,8 vs. DN33 × Group × Time: | t(330.38)=1.14, p=0.25 | |
| Overall MMN amplitude | Effect of Group: | F(1,68.51)=4.49, p=0.04 |
| Effect of Time: | F(1,61,21)=0.10, p=0.75 | |
| Group × Time: | F(1,61.21)=4.60, p=0.04 | |
Note: SZ, schizophrenia group; HC, healthy control group; RP, repetition positivity; DN, deviant negativity.