Table 3.

Prediction of Group Membership with Logistic Regression

	Model χ2	Sig	Nagelkerke R2	Classification Accuracy (overall, sensitivity, specificity)	B	SE	Sig	OR	95% CI for the OR
Restricted Model	4.41	.110	.16	61.8%, 66.7%, 56.3%
Early Externalizing Behaviors					0.04	0.04	.244	1.05	0.97 – 1.13
Family History of SUD					0.74	0.51	.149	2.09	0.77 – 5.68
Constant					−3.01	1.95	.123	0.05
Full Model	11.80	.019	.39	73.5%, 72.2%, 75.0%
Early Externalizing Behaviors					0.06	0.04	.156	1.06	0.98 – 1.15
Family History of SUD					0.54	0.61	.377	1.71	0.52 – 5.67
NAcc: Large Gain Anticipation vs. Neutral Anticipation					1.76	0.77	.023	5.81	1.28 – 26.42
NAcc: Large Loss Anticipation vs. Neutral Anticipation					−1.93	1.04	.063	0.15	0.02 – 1.11
Constant					−4.66	2.28	.041	0.01

Note. SUD, substance use disorder; NAcc, nucleus accumbens; Sig, significance; B, beta coefficient; SE, standard error; OR, odds ratio; CI, confidence interval