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Table 3 Twin correlations

From: A longitudinal twin study of the association between childhood autistic traits and psychotic experiences in adolescence

Cross-twin correlations
  MZM DZM MZF DZF DZOS
  Estimate 95 % CI Estimate 95 % CI Estimate 95 % CI Estimate 95 % CI Estimate 95 % CI
Autistic traits age 8 .83 .81/.85 .37 .35/.39 .79 .76/.82 .45 .40/.49 .48 .44/.49
Autistic traits age 12 .79 .77/.82 .32 .29/.35 .76 .73/.79 .51 .47/.55 .41 .38/.45
Autistic traits age 14 .91 .88/.93 .54 .51/.56 .88 .85/.89 .62 .60/.66 .51 .47/.55
Autistic traits age 16 .92 .90/.95 .51 .48/.55 .82 .80/.87 .58 .55/.61 .46 .44/.50
Anhedonia .37 .31/.39 .19 .18/.22 .45 .42/.46 .17 .13/.19 .14 .12/.15
Negative symptoms .80 .78/.82 .59 .55/.60 .81 .78/.82 .52 .47/.54 .47 .44/.48
Cross-trait cross-twin correlations
  MZM DZM MZF DZF DZOS
  Estimate 95 % CI Estimate 95 % CI Estimate 95 % CI Estimate 95 % CI Estimate 95 % CI
Autistic traits age 8—anhedonia .18 .15/.22 .07 .03/.10 .22 .19/.23 .03 .01/.05 .08 .05/.09
Autistic traits age 12—anhedonia .20 .17/.23 .00 −.05/.04 .23 .19/.26 .07 .03/.09 .11 .05/.13
Autistic traits age 14—anhedonia .24 .15/.27 .16 .09/.20 .32 .21/.34 .12 .08/.15 .14 .04/.17
Autistic traits age 16—anhedonia .28 .24/.29 .15 .09/.17 .31 .29/.33 .11 .06/.12 .11 .09/.13
Autistic traits age 8—negative symptoms .22 .19/.23 .18 .15/.19 .24 .21/.25 .19 .15/.22 .20 .18/.22
Autistic traits age 12—negative symptoms .34 .31/.35 .24 .22/.25 .29 .27/.31 .19 .17/.22 .19 .15/.22
Autistic traits age 14—negative symptoms .37 .31/.44 .30 .22/.36 .32 .23/.36 .25 .18/.29 .24 .21/.27
Autistic traits age 16—negative symptoms .43 .42/.45 .31 .29/.34 .36 .34/.38 .30 .28/.36 .21 .19/.23
  1. MZM monozygotic male, DZM dizygotic male, MZF monozygotic female, DZF dizygotic female, DZOS dizygotic opposite sex