. 2015 Dec 30;17:83–93. doi: 10.1016/j.dcn.2015.12.014

Table 5.

Hierarchical regression testing the relationship between total amount of glasses of alcohol drank last month at the second time point (T2) and testosterone levels and left and right nucleus accumbens (NAcc) activation at the first time point (T1) and second time point (T2) for the left NAcc. Linear regressors of age are indicated by Age¹, quadratic regressors of age by Age² and cubic regressors of age by Age³. Asterisks indicate significant effects.

	df	F	R²Δ	B	SE	β	t	p
Right NAcc
Step 1	3165	37.68	.41
Constant				−154.62	77.52		−2.00	0.05^*
Age¹				8.92	3.97	1.90	2.25	0.03^*
Age²				0.59	0.35	0.66	1.69	0.09
Age³				−0.03	0.02	−0.96	−1.43	0.15
Step 2	5163	22.93	.01
Constant				−172.12	80.12		−2.15	0.03^*
Age¹				9.67	4.06	2.06	2.38	0.02^*
Age²				0.67	0.36	0.75	1.86	0.06
Age³				−0.03	0.02	−1.09	−1.59	0.11
Testosterone T2				1.74	1.64	0.07	1.06	0.29
Right NAcc win > lose T2				−0.26	0.36	−0.05	−0.73	0.47
Step 3	7161	17.27	.02
Constant				−189.04	79.95		−2.36	0.02^*
Age¹				10.38	4.04	2.21	2.57	0.01^*
Age²				0.72	0.36	0.81	2.03	0.04^*
Age³				−0.04	0.02	−1.29	−1.88	0.06
Testosterone T2				−2.72	2.68	−0.10	−1.02	0.31
Right NAcc win > lose T2				−0.40	0.37	−0.07	−1.08	0.28
Testosterone T1				5.79	2.79	0.24	2.07	0.04^*
Right NAcc win > lose T1				0.15	0.39	0.02	0.39	0.70

Left NAcc
Step 1	3165	37.68	.41
Constant				−154.62	77.52		−2.00	0.05^*
Age¹				8.92	3.97	1.90	2.25	0.03^*
Age²				0.59	0.35	0.66	1.69	0.09
Age³				−0.03	0.02	−0.96	−1.43	0.15
Step 2	5163	23.23	.01
Constant				−169.80	79.90		−2.13	0.04^*
Age¹				9.57	4.05	2.04	2.36	0.02^*
Age²				0.66	0.36	0.75	1.86	0.07
Age³				−0.03	0.02	−1.07	−1.56	0.12
Testosterone T2				1.74	1.64	0.07	1.06	0.29
Left NAcc win > lose T2				−0.46	0.39	−0.07	−1.18	0.24
Step 3	7161	17.55	.02
Constant				−187.49	79.67		−2.35	0.02^*
Age¹				10.31	4.03	2.20	2.56	0.01^*
Age²				0.72	0.36	0.81	2.03	0.05^*
Age³				−0.04	0.02	−1.28	−1.87	0.06^*
Testosterone T2				−2.78	2.66	−0.11	−1.05	0.30
Left NAcc win > lose T2				−0.60	0.40	−0.09	−1.49	0.14
Testosterone T1				5.84	2.77	0.24	2.11	0.04^*
Left NAcc win > lose T1				0.24	0.38	0.04	0.62	0.53