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Table 1 Demographic characteristics of the participants (n = 103)

From: Test–retest reliability and convergent validity of the test of nonverbal intelligence-fourth edition in patients with schizophrenia

Characteristic Value
Gender, n (%)
 Male 52 (50.5%)
 Female 51 (49.5%)
Age range, years
 Age, mean (SD) 46.7 (10.2)
 20–39 28 (27.2%)
 40–49 30 (29.1%)
 50–70 45 (43.7%)
Age of onset, years, mean (SD) 26.5 (8.3)
Duration of illness, years, mean (SD) 20.2 (9.3)
Education level, n (%)
 Illiterate 0
 Elementary 7 (6.8%)
 Middle school 38 (36.9%)
 High school or vocational school 41 (39.8%)
 University or graduate school 17 (16.5%)
Marital status, n (%)
 Married 28 (27.2%)
 single 71 (68.9%)
 Other 4 (3.9%)
CGI-S (SD) 3 (0.8)
MoCA (SD)a 23.3 (4.6)
T-SDMT (SD)a 32.1 (9.1)
  1. aThere were some missing data in the variables of the MoCA and T-SDMT
  2. Note: CGI-S Clinical Global Impressions Scale-Severity, MoCA Montreal Cognitive Assessment, T-SDMT Tablet-Based Symbol Digit Modalities Test