. 2011 Aug 17;6(8):e22923. doi: 10.1371/journal.pone.0022923

Table 4. Logistic regression analysis testing the potential role of NS as a mediator between COMT rs737866 and the onset age of drug abuse*.

	Predictor	Beta	t/OR	R²	P
*Mediation condition 1*
(dependent: NS subscale score)	rs737866	0.125	2.755	0.016	0.006
*Mediation condition 2*
dependent: early or later onset of heroin use)	rs737866	−0.465	0.628	0.013	0.013
*Mediation condition 3*
dependent: early or later onset of heroin use)	rs737866 AND	−0.396	0.673	0.035	0.038
	NS score		0.957		0.001