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Table 1 Sociodemographic characteristics of healthy controls (HC) and healthy controls with family history of psychosis (HC-FHP)

From: Antioxidant defense system and family environment in adolescents with family history of psychosis

  HC HC-FHP
N 82 14
Age ( years )   
Mean 15.06 15.86
Standard deviation 2.03 1.23
Median 16 16
U Mann Whitney 460  
z −1.214  
p 0.225  
Gender   
Frequency (male) 52 (63.41%) 8 (57.14%)
Chi-square 0.201  
p 0.654  
Parental SES   
1 (highest) 8 1
2 18 4
3 24 3
4 10 0
5 22 6
p (Fisher) 0.589  
Parental occupational category  
1(lowest) 2 1
2 9 2
3 24 5
4 9 0
5 10 0
6 8 0
7 3 0
8 11 4
9 6 2
p (Fisher) 0.347  
Tobacco use   
Frequency (smokers) 4 (49%) 2 (14,3%)
p (Fisher) 0.210