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. Author manuscript; available in PMC: 2020 Dec 1.
Published in final edited form as: Psychol Med. 2018 Dec 19;49(16):2745–2753. doi: 10.1017/S003329171800377X

Table 4.

Results of a mega-analysis – model-fitting to all three twin samples

Model # Across- sample constraints Model Minus 2 Log-likelihood df AIC
1 None ACE 37 724 29 066 −20 408
2 None AE 37 740 29 078 −20 416
3 None CE 37 816 29 078 −20 340
4 Complete AE 37 784 29 100 −20 416