Table 1 Sample characteristics by the rs1344706 genotype

From: Associations between the schizophrenia susceptibility gene ZNF804A and clinical outcomes in psychosis

Variables

AA (N=178)

AC (N=93)

CC (N=20)

Total (N=291)

P-valuea

 

Mean (s.d.) age, years

27.6 (7.9)

28.1 (8.9)

30.6 (7.6)

27.9 (8.2)

0.59

 

Mean (s.d.) black African genetic ancestry score

0.630 (0.395)

0.196 (0.297)

0.106 (0.191)

0.456 (0.418)

<0.001

 

Mean (s.d.) white Caucasian genetic ancestry score

0.244 (0.328)

0.491 (0.361)

0.580 (0.361)

0.346 (0.364)

<0.001

 

Mean (s.d.) Asian genetic ancestry score

0.124 (0.210)

0.314 (0.327)

0.314 (0.328)

0.198 (0.277)

<0.001

 
 

AA

AC

CC

Total

P-valueb

χ 2 (df)

Male gender (n, %)

122 (68.5)

55 (59.1)

11 (55.0)

188 (64.6)

0.08

3.09 (1)

Single relationship status (n, %)

160 (89.9)

80 (86.0)

14 (70.0)

254 (87.3)

0.02

5.24 (1)

Schizophreniform diagnosis (n, %)

111 (66.9)

53 (60.9)

09 (47.4)

173 (63.6)

0.09

2.95 (1)

  1. Abbreviation: df, degree of freedom.
  2. aLinear regression (modelling the covariate against number of A alleles).
  3. bχ2-test applied to the cross-tabulation between the covariate and genotype.