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. Author manuscript; available in PMC: 2015 Jan 21.
Published in final edited form as: Addict Biol. 2012 Dec 12;19(4):552–561. doi: 10.1111/adb.12016

Table 2.

Heritability of OXY-CPP and concomitant phenotypes in AIL mice.

Phenotype h2 regression
(S.E.)		 h2 maximum likelihood
(S.E.)
D1 CPP 0.01 (0.07) 0 (0)
D8 CPP −0.11 (0.1) 0 (0)
D8-D1 CPP 0.14 (0.11) 0 (0)
D1 ACT 0.36 (0.15) 0.49 (0.20)
D8 ACT 0.35 (0.18) 0.58 (0.16)
D2 ACT 0.32 (0.14) 0.58 (0.14)
D3 ACT 0.66 (0.16) 0.83 (0.10)
D4 ACT 0.30 (0.13) 0.59 (0.11)
D5 ACT 0.50 (0.11) 0.72 (0.11)
D4-D2 ACT 0.17 (0.19) 0.51 (0.13)
SD CHG D1 0.18 (0.15) 0.40 (0.16)
SD CHG D8 0.46 (0.16) 0.66 (0.11)

The heritability estimates (h2) and standard errors (S.E.) of OXY-CPP and the concomitant phenotypes derived from regression analysis and maximum likelihood estimation are listed. Bolded values indicate estimates that were significantly different from zero.