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. 2017 Jun 15;43(4):712–719. doi: 10.1093/schbul/sbx066

Table 3.

Quantitative Comparison of SANS Global Score Severity Across Diagnostic Categories

Mean (SD) Minimum Maximum Cohen’s d Compared to Healthy Controls Cohen’s d Compared to Schizophrenia
Schizophrenia (n = 610)
 Blunted affect 1.7 (1.3) 0 5 1.21
 Alogia 1.2 (1.2) 0 5 0.97
 Avolition 2.1 (1.4) 0 5 1.34
 Anhedonia/asociality 2.1 (1.4) 0 5 1.34
 EXP dimension 1.5 (1.1) 0 5 1.34
 AVOL dimension 2.3 (1.2) 0 5 1.74
 Total 1.8 (1.0) 0 4.5 1.68
Schizoaffective disorder (n = 197)
 Blunted affect 1.3 (1.3) 0 4 0.96 −0.31
 Alogia 0.9 (1.0) 0 4 0.93 −0.26
 Avolition 1.9 (1.3) 0 5 1.38 −0.15
 Anhedonia/asociality 2.1 (1.4) 0 5 1.45 0.00
 EXP dimension 1.1 (1.0) 0 4 1.15 −0.37
 AVOL dimension 2.2 (1.1) 0 5 1.94 −0.09
 Total 1.4 (0.9) 0 4.3 1.50 −0.41
Major depressive disorder (n = 23)
 Blunted affect 1.1 (1.3) 1 5 1.18 −0.46
 Alogia 0.9 (1.5) 1 5 1.06 −0.25
 Avolition 1.7 (1.4) 1 5 1.6 −0.29
 Anhedonia/asociality 1.6 (1.6) 1 5 1.4 −0.36
 EXP dimension 1.0 (1.4) 1 5 1.23 −0.45
 AVOL dimension 1.6 (1.3) 1 5 1.69 −0.58
 Total 1.3 (1.0) 1 5 1.84 −0.50
Bipolar disorder (n = 113)
 Blunted affect 0.8 (1.1) 0 4 0.66 −0.71
 Alogia 0.2 (0.7) 0 4 0.18 −0.88
 Avolition 0.9 (1.2) 0 5 0.59 −0.88
 Anhedonia/asociality 1.2 (1.3) 0 5 0.83 −0.65
 EXP dimension 0.5 (0.7) 0 3.5 0.69 −0.96
 AVOL dimension 1.2 (1.2) 0 4.5 0.91 −0.92
 Total 1.0 (0.8) 0 3.8 1.19 −0.82
Ultra high-risk (n = 24)
 Blunted affect 1.5 (1.8) 0 5 1.31 −0.15
 Alogia 0.8 (1.3) 0 4 1.05 −0.33
 Avolition 1.5 (1.8) 0 5 1.16 −0.42
 Anhedonia/asociality 2.3 (1.8) 0 5 1.93 0.14
 EXP dimension 1.1 (1.4) 0 4.5 1.35 −0.36
 AVOL dimension 1.9 (1.6) 0 5 1.78 −0.33
 Total 1.5 (1.2) 0 4.8 1.89 −0.30
Healthy control (n = 69)
 Blunted affect 0.2 (0.5) 0 2 −1.21
 Alogia 0.1 (0.2) 0 1 −0.97
 Avolition 0.3 (0.6) 0 2 −1.34
 Anhedonia/asociality 0.3 (0.6) 0 2 −1.34
 EXP dimension 0.1 (0.3) 0 1.5 −1.34
 AVOL dimension 0.3 (0.5) 0 2 −1.74
 Total 0.2 (0.4) 0 1.8 −1.68