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. Author manuscript; available in PMC: 2021 May 1.
Published in final edited form as: Behav Genet. 2020 Feb 8;50(3):139–151. doi: 10.1007/s10519-020-09994-8

Table 6:

Correlations between Marijuana Use Frequency Intercept, Slope, and Externalizing Psychopathology

Ext-Intercept (p) Ext- Slope (p) Intercept-Slope (p)
Phenotypic MN .67 (1.5× 10−66) .18 (2.3× 10−5) .57 (7.5× 10−33)
CO .69 (5.2× 10−33) .20 (.01) .84 (2.4× 10−15)
Genetic MN .64 (1.4× 10−5) .26 (.12) .63 (1.9× 10−7)
CO .86 (6.8× 10−4) .49 (.24) .86 (.049)
Shared MN 1 (.003) -- --
Environment CO .69 (.018) .22 (.46) .86 (.003)
Unique MN .37 (.02) .03 (.83) .94 (2.7× 10−7)
Environment CO .31 (.12) −.20 (.31) .87 (.004)

Note: Ext=Externalizing psychopathology. In Minnesota, the C component of the slope was estimated to be 0, so those correlations are not estimated. Note that genetic and environmental correlations are scaled according to the genetic and environmental variances.