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Table 1 Clinical characteristics of schizophrenia cases

From: Mitochondrial complex I and III gene mRNA levels in schizophrenia, and their relationship with clinical features

Variables Groups Statistical analysis
  First-episode schizophrenia (n = 54) Chronic schizophrenia (n = 84)
Duration of disease; Mean ± s.d (month) 0.2 ± 0.1 32.2 ± 17.6 Z = −8.8; p < 0.01
Age of onset of the disease; Mean ± s.d (year) 21.6 ± 1.5 20.2 ± 1.7 Z = −3.8; p < 0.01
Duration of hospitalization; Mean ± s.d (day) 18.3 ± 3.5 14.4 ± 2.8 Z = −5.1; p < 0.01
SANS; Mean ± s.d 46.9 ± 11.9 48.2 ± 12.4 Z = −0.6; p = 0.55
SAPS; Mean ± s.d 58.7 ± 17.6 39.2 ± 21.9 Z = −4.1; p < 0.01
BPRS; Mean ± s.d 40.7 ± 9.4 31.0 ± 9.7 Z = −4.5; p < 0.01
  1. Mean ± s.d : Mean ± standart deviation Z: Mann–Whitney U test.
  2. No statistically significant difference was detected between first-episode schizophrenia and chronic schizophrenia in terms of SANS score (p = 0.55). SAPS (p < 0.01) and BPRS (p < 0.01) scores were higher in first-episode schizophrenia cases. The age of onset of the disease was higher in first-episode schizophrenia (p < 0.01). Duration of hospitalization was longer in patients with first-episode schizophrenia cases than chronic schizophrenia cases (p < 0.01).