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Goodness-of-fit statistics for univariate models of cannabis withdrawal.
| Model | Comparison model |
Δχ2 | Δdf | p-value | |
|---|---|---|---|---|---|
| 1 | General sex limitation model (C correlation for DOS twins estimated in the model) | ||||
| 2 | Common effects sex-limitation model | 1 | 0.79 | 1 | 0.37 |
| 3 | General ACE model | 2 | 2.46 | 2 | 0.29 |
| 4 | AE model | 3 | 0.26 | 1 | 0.61 |
| 5 | CE model | 3 | 3.85 | 1 | 0. 0497 |
A= additive genetic influences, C = shared environmental influences, E = non-shared environmental influences
