Table 3. Comparison of sociodemographic measures between controls and those with anhedonia in the ABCD 4.0 release, excluding ABCD 1.0 release, sub-sample.

Measures	Control (N = 5863)	Anhedonia (N = 591)	Statistic	p-value
% Male	51.2	56.7	6.202	0.013
Mean Age (months)a	118.5	119.1	-1.705	0.089
% Asian	2.3	0.8	4.703	0.03
% Black	15.2	20.8	12.449	<0.001
% Hispanic	20.5	26.4	11.087	0.001
% Other	10.4	12.9	3.055	0.08
% White	51.6	39.1	33.287	<0.001
% Bipolar II	0.3	8.3	313.34	<0.001
% Depressed Mood	6.4	31.8	431.052	<0.001
% Irritability	4.4	27.9	484.563	<0.001

The proportion (%) of participants in each group for each measure are shown. Student’s t-test was done to compare age (in months) between control and anhedonia groups. Chi-square tests of independence were done for all other measures. Note there is a slightly lower number of controls here than reported above due to the exclusion of participants with missing sociodemographic and/or comorbid psychiatric syndrome and diagnoses measures.

^a Student’s t-statistic.