Table 2.
Descriptive statistics
| Sz-H (n=16) |
Sz-NH (n=14) |
HC (n=18) |
Sz vs. HC | Sz-H vs. Sz-NH | |
|---|---|---|---|---|---|
| Mean (s.d.) | Mean (s.d.) | Mean (s.d.) | F or t (df), p | F or t (df), p | |
| MMN3 | −0.93 (1.65) | 0.49 (1.86) | −0.43 (0.84) | ||
| MMN8 | −0.33 (1.90) | −0.91 (1.29) | −0.41 (1.04) | ||
| MMN33 | −1.09 (2.26) | −2.13 (2.61) | −2.68 (1.50) | ||
| Effect of sequence condition: F(2,45)=15.27, p<0.001 |
Effect of sequence condition: F(2,27)=3.41, p=0.05 |
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| Effect of group: F(1,46)=4.30, p=0.31 |
Effect of group: F(1,28)=0.02, p=0.90 |
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| Group x sequence condition: F(2,45)=2.65, p=0.08 |
Group x sequence condition: F(2,27)=3.98, p=0.03 |
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| Repetition positivity | 0.27 (1.83) | 1.39 (1.55) | 1.09 (1.18) | t(46)=0.63, p=0.53 | t(28)=1.80, p=0.08 |
| Memory trace effect | −0.16 (2.77) | −2.62 (3.23) | −2.25 (1.84) | t(46)=-1.13, p=0.26 | t(28)=-2.25, p=0.03 |
| Tone Matching Test | 104.00 (13.14) | 96.00 (19.18) | 107.35 (14.91) | t(48)=1.55, p=0.13 | t(28)=-1.35, p=0.19 |
| MCCB OCS | 35.38 (12.63) | 38.29 (16.60) | 47.05 (14.70) | t(46)=2.47, p=0.02 | t(28)=0.54, p=0.59 |
| RFS Work | 2.38 (1.54) | 3.50 (1.65) | – | – | t(28)=1.90, p=0.07 |
| RFS Independent Living | 4.44 (1.62) | 4.57 (1.74) | – | – | t(28)=0.22, p=0.83 |
| RFS Family | 5.25 (1.39) | 4.71 (1.94) | – | – | t(28)=-0.87 p=0.39 |
| RFS Social | 3.94 (1.89) | 4.50 (1.34) | – | – | t(28)=0.91, p=0.37 |
| RFS Total score | 16.00 (1.54) | 17.29 (4.60) | – | – | t(28)=0.80, p=0.43 |
Note: Sz-H, hallucinations group; Sz-NH, no hallucinations group; HC, healthy comparison group; MMN, mismatch negativity; MCCB OCS, MATRICS Consensus Cognitive Battery overall composite score; RFS, Role Functioning Scale.