Table 2.

Results of Subjective Measures

	DRD4. L (n = 22)		OPRM1.G (n = 11)		Controls (n = 31)
	Mean	SD	Mean	SD	Mean	SD
Total AUDIT score	12.80	4.95	12.11	4.70	11.10	4.90
Baseline AUQ	18.30	17.20	15.90	8.97	14.60	7.06
Postscan AUQ	19.70	5.84	15.30	8.33	17.60	7.65
Postscan AUQ minus baseline AUQ	2.19	5.62	−0.36	10.90	2.72	5.00
In-scanner alcohol urge rating (before priming)	1.60	0.51	1.50	0.63	1.63	0.66
In-scanner litchi urge rating (before priming)	1.40	0.53	1.57	0.90	1.46	0.52
In-scanner alcohol craving (after priming)	2.02	0.79	1.54	0.63	1.97	6.81
In-scanner litchi craving (after priming)	1.91	0.64	1.51	0.743	1.81	0.65
Post- minus prepriming in-scanner litchi urge rating	0.53	0.58	−0.06*	0.53	0.33	0.39
Post- minus prepriming in-scanner alcohol urge rating	0.42	0.71	0.04	0.59	0.29	0.39

Mean values and standard deviations of subjective measures for each group are summarized in this table. T-tests revealed a significant difference between OPRM1.G individuals and controls (individuals with DRD4.S and OPRM1.A genotype) in the difference score between postscan minus prescan in scanner litchi urge ratings (p < 0.05). The groups did not differ in any of the other subjective measures.

^*t = −2.457, p = 0.02.