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Table 3 Relationship between the variables associated with the course of disease and the test results—correlations (Spearman’s rank correlation coefficient)—patients with schizophrenia

From: Cognitive impairment in schizophrenia across age groups: a case–control study

 

WCST correct answers

WCST total errors

WCST perseverative responses

WCST perseverative errors

WCST conceptual level

WCST categories achieved

WCST trials to complete 1st category

WCST failure to maintain set

Age

-,273a

,292a

,129

,081

-,256a

-,280a

,247a

-,213b

Education (years)

,051

-,051

-,050

-,051

,110

,001

,016

,219b

Hospitalizations

-,080

,094

,028

,010

-,104

-,189b

,142

-,102

Time from 1st hospitalization

-,182b

,211b

,055

,043

-,202b

-,225b

,199b

-,182b

Time from onset of schizophrenia

-,203b

,213b

,085

,070

-,211b

-,218b

,224b

-,190b

Diffrerence between years from onset and years from 1st hospitalization

-,069

,061

,185b

,200b

-,055

,083

-,050

-,082

  1. aCorrelation is significant at the 0.01 level (2-tailed)
  2. bCorrelation is significant at the 0.05 level (2-tailed)