Table 1. Comparison of demographic measures between controls and those with anhedonia in the ABCD 1.0 sample.
| Measures | Control (N = 2209) | Anhedonia (N = 215) | Statistic | p-value |
|---|---|---|---|---|
| % Male | 51.8 | 54 | 0.286 | 0.593 |
| Mean Age (months) | 120.6 | 119.9 | 1.183a | 0.238 |
| % Asian | 1.8 | 0.9 | 0.45 | 0.502 |
| % Black | 8.2 | 18.1 | 22.296 | <0.001 |
| % Hispanic | 20 | 26.5 | 4.753 | 0.029 |
| % Other | 9.3 | 9.8 | 0.012 | 0.911 |
| % White | 60.8 | 44.7 | 20.386 | <0.001 |
| % Bipolar II | 0.8 | 7.9 | 64.358 | <0.001 |
| % Depressed Mood | 8.1 | 28.4 | 87.975 | <0.001 |
| % Irritability | 4.7 | 26.5 | 148.192 | <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 in our reproduction analysis due to the exclusion of participants with missing demographic and/or comorbid psychiatric symptom and diagnosis measures.
a Student’s t-statistic.