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Table 1 Demographic and clinical characteristics of DS and NDS patients and healthy controls

From: Serum BDNF and GDNF in Chinese male patients with deficit schizophrenia and their relationships with neurocognitive dysfunction

  Deficit schizophrenia (DS; N = 51) Nondeficit schizophrenia (NDS; N = 58) Healthy controls (HC; N = 40) F/t/χ2 p Value
Age (years) 50.24 ± 6.85 47.90 ± 6.84 46.78 ± 10.73 2.245 0.110
Education (years) 8.71 ± 2.44 8.79 ± 2.19 10.08 ± 3.21 3.857 0.023
BMI (kg/m2) 25.10 ± 1.28 25.21 ± 1.17 24.82 ± 1.16 1.212 0.301
Age of Onset (years) 22.02 ± 2.75 22.16 ± 2.91 −0.249 0.804
Duration of illness(years) 28.22 ± 6.13 25.74 ± 6.94 1.962 0.052
Chlorpromazine eguivalents (mg) 462.65 ± 238.61 524.48 ± 211.00 −1.436 0.154
Smoking ratio (%) 54.90 69.00 2.287 0.130
BPRS score
 Positive symptoms 6.35 ± 1.16 6.45 ± 1.20 −0.420 0.675
 Negative symptoms 12.43 ± 1.78 7.47 ± 1.25 17.028 < 0.001
 Disorganized symptoms 6.75 ± 1.57 6.59 ± 1.04 0.628 0.531
 Affect syndromes 6.67 ± 1.11 7.02 ± 1.32 −1.492 0.139
 Sum 32.18 ± 3.17 27.52 ± 2.86 8.070 < 0.001
SAPS total score 9.76 ± 3.84 10.31 ± 4.69 −0.659 0.511
SANS total score 57.41 ± 9.30 32.62 ± 7.51 15.385 < 0.001
  1. BMI body mass index, BPRS brief psychiatric rating scale, SAPS the Scale for the Assessment of Positive Symptoms, SANS the Scale for the Assessment of Negative Symptoms