Table 4.
ICC | ||
---|---|---|
Roving standard MMN Measure | SZ n=35 |
HC n=27 |
MMN3 | 0.00 | 0.01 |
MMN8 | 0.35* | 0.34* |
MMN33 | 0.30* | 0.56** |
RP3 | 0.59** | 0.53** |
RP8 | 0.58** | 0.59** |
RP33 | 0.20 | 0.56** |
DN3 | 0.30* | 0.37* |
DN8 | 0.48** | 0.07 |
DN33 | 0.57** | 0.59** |
MMNMT | 0.04 | 0.37* |
RPMT | 0.05 | 0.30 |
DNMT | 0.14 | 0.22 |
Overall MMN | 0.55** | 0.64** |
Overall RP | 0.74** | 0.86** |
Overall DN | 0.72** | 0.67** |
Note:
p<0.05,
p<0.01;
ICC, intra-class correlation, using two-way mixed single measures consistency formula (ICC 3, 1 from Shrout and Fleiss, 1979); SZ, schizophrenia group; HC, healthy control group; MMN, mismatch negativity; RP, repetition positivity; DN, deviant negativity. MT, memory trace effect, defined for each component by subtracting value associated with repeated standard 3 from value associated with repeated standard 33. Overall MMN, RP, and DN measures are based on ERP averages of all standards, all deviants, and the resulting ERP deviant-standard difference waves.