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Table 2 Comparison of neuropsychological tests between normal controls and FEDN schizophrenia (between sex)

From: Sex differences in association between cognitive impairment and clinical correlates in Chinese patients with first-episode drug-naïve schizophrenia

Cognitive domains

Cognitive tests

Normal controls

FEDN schizophrenia

Diagnosis F

(p-value)

Sex F

(p-value)

Diagnosis × sex F

(p-value)

Male(n = 74)

Female(n = 86)

Male(n = 45)

Female(n = 48)

Speed of processing

Category fluency

56.8 ± 13.1

52.0 ± 12.2

52.8 ± 9.2

51.5 ± 9.7

2.241(0.136)

3.977(0.047)

1.346(0.247)

 

Symbol coding

57.7 ± 9.4*

55.9 ± 11.6

38.4 ± 11.0*++

43.5 ± 9.7++

132.753(< 0.001)

1.447(0.230)

6.354(0.012)

 

Trail Making A

56.4 ± 8.2

53.8 ± 9.6

45.5 ± 6.8++

47.3 ± 7.3++

64.223(< 0.001)

0.151(0.698)

4.043(0.045)

Attention

CPT-IP

55.2 ± 7.9

53.5 ± 8.6

40.4 ± 9.7++

44.3 ± 9.5++

108.633(< 0.001)

0.845(0.359)

6.079(0.014)

Working memory

Spatial span total

60.7 ± 11.4

55.1 ± 11.9

43.7 ± 12.1++

48.1 ± 13.2++

58.608(< 0.001)

0.170(0.681)

10.297(0.002)

 

Digital sequence

60.2 ± 10.5

54.4 ± 10.5

46.0 ± 10.2*++

50.8 ± 10.1

43.065(< 0.001)

0.138(0.711)

14.873(< 0.001)

Verbal learning

HVLT-R total

59.8 ± 8.8

56.3 ± 10.3

46.7 ± 12.5*++

52.3 ± 9.3+

41.215(< 0.001)

0.654(0.419)

11.823(0.001)

Visual learning

BVMT-R total

57.8 ± 8.2*

54.8 ± 10.4

49.1 ± 9.5++

46.1 ± 10.0++

49.165(< 0.001)

5.762(0.017)

0.000(0.994)

Reasoning and problem solving

Mazes (NAB) total

62.4 ± 7.7**

56.4 ± 11.0

48.9 ± 10.3++

46.6 ± 9.6++

83.328(< 0.001)

10.701(0.001)

2.130(0.146)

Social cognition

MSCEIT

51.8 ± 8.8

51.0 ± 8.3

47.7 ± 11.9+

51.2 ± 11.1

2.432(0.120)

1.112(0.293)

2.740(0.099)

 

Total MCCB scores

63.0 ± 10.6

57.2 ± 12.4

44.2 ± 10.0++

47.6 ± 9.7++

97.977(< 0.001)

0.665(0.416)

10.234(0.002)

  1. *Indicates the comparison between males and females in FEDN schizophrenia or in the controls: *p < 0.05, **p < 0.01
  2. +Indicates the comparison between FEDN schizophrenia and the controls in males or females: +p < 0.05, ++p < 0.01