Table 1.
Characteristics of neural‐based subgroups (N = 174)
| Measure | Subgroup A (N = 80) | Subgroup B (N = 94) | Statistical comparison | |||
|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | t | p | |
| Age during fMRI scan (years) | 15.78 | .51 | 15.94 | .53 | −2.02 | .045 |
| Pubertal development | 3.15 | .59 | 3.35 | .55 | −2.29 | .024 |
| Anxiety (wave 1) 1 | 17.27 | 11.33 | 17.14 | 11.17 | .07 | .941 |
| Anxiety (wave 2) 1 | 16.51 | 12.34 | 14.93 | 12.22 | .72 | .475 |
| Anxiety (wave 3; COVID‐19) 1 | 12.62 | 13.01 | 8.67 | 10.34 | 1.80 | .074 |
| Depression (wave 1) 2 | 15.52 | 10.08 | 15.43 | 9.96 | .06 | .951 |
| Depression (wave 2) 2 | 15.37 | 14.25 | 12.36 | 12.44 | 1.24 | .220 |
| Depression (wave 3; COVID‐19) 2 | 11.91 | 8.69 | 10.32 | 8.53 | 1.00 | .320 |
| COVID‐19 economic adversity | 2.22 | 1.67 | 1.97 | 1.74 | .78 | .439 |
| Days since study commenced | 168.90 | 99.10 | 140.66 | 84.28 | 1.75 | .083 |
| N | % | N | % | χ 2 | p | |
|---|---|---|---|---|---|---|
| Sex | ||||||
| Female | 43 | 53.75 | 51 | 54.26 | 0 | 1 |
| Male | 37 | 46.25 | 43 | 45.74 | ||
| Ethnoracial identity 3 | ||||||
| Black | 63 | 78.75 | 70 | 74.47 | 0.47 | .789 |
| White | 9 | 11.25 | 12 | 12.77 | ||
| Hispanic/LatinX | 5 | 6.25 | 7 | 7.45 | ||
| Other/Multiracial | 3 | 3.75 | 5 | 5.32 | ||
| Annual household income (baseline at wave 1) 4 | ||||||
| <$15,000 | 24 | 30 | 17 | 18.09 | 4.86 | .182 |
| $15,000–39,999 | 18 | 22.5 | 31 | 32.98 | ||
| $40,000–69,999 | 18 | 22.5 | 22 | 23.40 | ||
| >$70,000 | 19 | 23.75 | 24 | 25.53 | ||
| Unknown | 1 | 1.25 | 0 | 0 | ||
1
Wave 1 and Wave 2 anxiety were measured by Screen for Child Anxiety‐Related Emotional Disorders. Anxiety during COVID‐19 (wave 3) was measured by Beck Anxiety Inventory.
2
Wave 1 and Wave 2 depression were measured by Mood and Feelings Questionnaire. Depression during COVID‐19 (Wave 3) was measured using Beck Depression Inventory.
3
Other/Multiracial group was collapsed with Hispanic/LatinX group for chi‐square estimation.
4
Unknown group was collapsed with <$15,000 group for chi‐square estimation.