Table 5.

Composite scores: No/low vs. exceeds-threshold drinking groups

	Alcohol exposure effect from the Age Full Model†				Alcohol exposure effect from matched Samples††††
	N No/low	N Exceeds-threshold	t	p	N No/low	N Exceeds-threshold	t	p
ACCURACY			††	†††			††
Abstraction	657	110	1.119	0.2637	139	136	1.473	0.1420
Attention	664	111	0.058	0.9539	139	138	1.171	0.2428
Balance	652	111	−2.322	0.0205	133	138	−0.539	0.5905
Emotion	664	111	−0.118	0.9062	139	138	−1.410	0.1597
Episodic Memory	663	111	0.134	0.8927	139	138	0.976	0.3300
General Ability	663	111	−0.655	0.5126	139	138	0.799	0.4249
Working Memory	661	111	1.195	0.2323	139	138	2.085	0.0381
SPEED
Abstraction	657	110	−0.110	0.9227	139	136	0.287	0.7743
Attention	660	111	−3.877	0.0001	139	138	−4.533	0.0000
Emotion	663	110	−3.427	0.0006	139	137	−3.245	0.0013
Episodic Memory	663	111	−2.124	0.0340	139	138	−2.759	0.0062
General Ability	664	111	−2.450	0.0145	139	138	−3.121	0.0020
Motor Speed	653	110	−5.496	0.0000	135	137	−6.028	0.0000
Working Memory	661	111	−0.767	0.4434	139	138	−1.029	0.3047
TOTAL ACCURACY AND SPEED
Accuracy	639	109	−0.168	0.8666	133	135	0.999	0.3188
Speed	639	108	−4.082	0.0000	135	134	−4.518	0.0000
Accuracy-Speed	632	108	3.498	0.0005	133	134	4.087	0.0000

^†Full model=gam(domain~age + site +SES + ethnicity + sex + exposure)

^††Note: Negative t-values indicate No/low group>Exceeds-threshold group

^†††Bold font indicates significant χ² test of the effect of removing a covariate from the model (p<.05)

^††††Welch Two Sample t-tests