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Table 2 Comparison of demographic and clinical variables for the HC and SZ groups.

From: Left auditory cortex gamma synchronization and auditory hallucination symptoms in schizophrenia

  HC SZ Statistic p
Age (years) 44.4 +/- 6.8 39.8 +/- 10.5 t[32] = 1.47 0.151
Parental socio-economic status (ref. 24) 3.1 +/- 1.3 3.2 +/- 0.9 t[28] = -0.316 0.754
Handedness 0.78 +/- 0.16 0.77 +/- 0.25 t[32] = 0.172 0.864
Age of onset (years)   26.1 +/- 8.0   
Positive symptom total (SAPS)   9.0 +/- 4.2   
Negative symptom total (SANS)   13.9 +/- 4.9   
Medication dosage (chlorpromazine equivalents)   450 +/- 306
range 83–1200
  
  1. Mean +/- standard deviation are given for each variable.