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. 2017 Jan 18;12(1):e0170114. doi: 10.1371/journal.pone.0170114

Table 2. Correlations between facial emotion recognition performance (FER d'), demographic data, clinical characteristics, and neurocognitive measures in schizophrenia and nonclinical comparisons a.

FER d' Correlation coefficient a (ρ)
Schizophrenia (N = 74) Healthy controls (N = 80)
Age 0.01 -0.28*
Educational level, years 0.25* 0.12
Clinical characteristics
Age of onset 0.16 N/A
Duration of illness -0.16 N/A
Number of hospitalizations -0.20 N/A
Chlorpromazine equivalents (mg) -0.035 N/A
PANSS
Positive symptoms -0.14 N/A
Negative symptoms -0.05 N/A
General psychopathology -0.07 N/A
Total score -0.13 N/A
CDSS -0.09 N/A
BDI N/A -0.20
Neurocognitive measures
SPM 0.53** 0.26*
CPT d’ 0.15 0.14
WCST category 0.37** 0.35**
Digit span 0.32** 0.17

a Nonparametric correlation by Spearman ρ

PANSS = Positive and Negative Syndrome Scale; CDSS = Calgary Depression Scale for Schizophrenia; BDI = Beck Depression Inventory; SPM = Raven’s Standard Progressive Matrices; CPT = Continuous Performance Test; WCST = Wisconsin Card Sorting Test

*p < 0.05,

**p < 0.01