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Table 2 Twin correlations

From: Etiological influences on the stability of autistic traits from childhood to early adulthood: evidence from a twin study

  MZM DZM MZF DZF DZOS
Cross-twin, age 9/12 .70 (.65-.74) .21 (.13–.28) .65 (.60–.69) .20 (.12–.28) .26 (.20–.32)
Cross-twin, age 18 .59 (.52–.64) .21 (.11–.30) .57 (.51–.62) .24 (.15–.33) .25 (.17–.32)
Cross-trait cross-twin .32 (.27–.37) .10 (.03–.17) .32 (.26–.37) .09 (.02–.16) .16 (.10–.21)
  1. 95% confidence intervals are shown in parentheses
  2. Cross-twin, age 9/12 correlation of one twin’s A-TAC score at age 9/12 with their co-twin’s A-TAC score at age 9/12, Cross-twin, age 18 correlation of one twin’s A-TAC score at age 18 with their co-twin’s A-TAC score at age 18, Cross-trait, cross-twin correlation of one twin’s A-TAC score at age 9/12 with their co-twin’s A-TAC score at age 18, MZM monozygotic male, DZM dizygotic male, MZF monozygotic female, DZF dizygotic female, DZOS dizygotic opposite-sex