BMC Psychiatry

Table 2 Comparison of cohort characteristics for HC and AUD groups- p -values from Mann Whitney U-test

From: The BDNFp.Val66Met polymorphism, childhood trauma, and brain volumes in adolescents with alcohol abuse

	HC	AUD	HC vs AUD
	Females vs males	Females vs males	Females	Males	Total
Age (years)	0.949	0.581	0.589	0.401	0.313
Age (years)	^d 0.162	0.388	0.254	0.535	0.159
Education (years)	0.132	0.646	0.517	0.192	0.751
Education (years)	0.689	0.729	0.706	0.671	0.577
% Afrikaans-speaking^c	0.151	0.257	1.000	0.769	0.864
% Afrikaans-speaking^c		0.366	0.438	0.306	0.221
Alcohol life dose units	0.385	0.503	<0.001	<0.001	<0.001
Alcohol life dose units	0.538	0.881	<0.001	<0.001	<0.001
CTQ-Physical Abuse	0.561	0.023	0.983	0.018	0.116
CTQ-Physical Abuse	0.807	0.008	0.678	0.008	0.031
CTQ-Sexual abuse	0.455	0.018	0.398	0.001	0.004
CTQ-Sexual abuse	0.729	0.036	0.615	0.011	0.030
CTQ-Emotional Abuse	0.806	0.640	0.025	0.074	0.004
CTQ-Emotional Abuse	0.967	0.950	0.034	0.063	0.005
CTQ-Physical Neglect	0.199	0.984	0.014	0.605	0.032
CTQ-Physical Neglect	0.084	0.658	0.025	0.747	0.074
CTQ-Emotional Neglect	0.109	0.984	0.128	0.686	0.410
CTQ-Emotional Neglect	0.072	0.747	0.226	0.289	0.881
CTQ-total score	0.384	0.443	0.048	0.162	0.023
CTQ-total score	0.203	0.362	0.080	0.268	0.062

^cPearson chi-squared test (d.f. =1).^dImaging cohort values are indicated in italics.

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