Table 1.
Sample characteristics and group comparisons between PMC and controls.
| PMC | Controls | Comparison | |||
|---|---|---|---|---|---|
| (n = 16) | (n = 15) | ||||
| N | % | N | % | p-value | |
| Ethnicity | 1.000 | ||||
| Hispanic/Latino | 1 | 6.3 | 1 | 6.3 | |
| Not Hispanic/Latino | 14 | 87.5 | 14 | 93.3 | |
| Missing | 1 | 6.3 | 0 | 0.0 | |
| Race | .315 | ||||
| Euro American | 15 | 93.8 | 11 | 81.3 | |
| Other | 1 | 6.3 | 3 | 18.8 | |
| Missing | 0 | 0.0 | 1 | 3.7 | |
| Household Income | .264 | ||||
| < $75,000 | 7 | 43.8 | 10 | 66.7 | |
| $75,000 or more | 8 | 50.0 | 4 | 26.7 | |
| Preferred not to answer | 1 | 6.3 | 1 | 6.7 | |
| Education | .220 | ||||
| At least some college | 10 | 62.5 | 13 | 86.7 | |
| Post-graduate education | 6 | 37.5 | 2 | 13.3 | |
| Lifetime MDD | .073 | ||||
| Present | 6 | 37.5 | 11 | 73.3 | |
| Absent | 10 | 62.5 | 4 | 26.7 | |
| Current MDD | .157 | ||||
| Present | 2 | 12.5 | 0 | 0.0 | |
| Absent | 14 | 87.5 | 15 | 100.0 | |
| Past-month psychiatric medication | .193 | ||||
| Yes | 3 | 18.8 | 6 | 40.0 | |
| No | 13 | 81.3 | 9 | 60.0 | |
| M | SD | M | SD | p-value | |
| Age (years) | 39.56 | 9.54 | 43.47 | 11.42 | .309 |
| Cognitive Functioning | |||||
| Verbal Comprehension | 52.56 | 5.39 | 59.13 | 9.80 | .027 |
| Matrix Reasoning | 56.00 | 5.48 | 54.73 | 6.71 | .568 |
| Full Scale IQ | 107.31 | 7.37 | 112.00 | 11.75 | .191 |
| Reward processing (Fz/Cz average in μV) | |||||
| RewP-wins | 15.44 | 5.66 | 14.18 | 6.85 | .290 |
| RewP-losses | 14.58 | 5.11 | 11.11 | 5.90 | .045 |
| RewP-diff | 0.86 | 2.99 | 3.07 | 2.27 | .014 |