Table 1.

Descriptive Statistics for Participant Characteristics (n = 151)

Variables	n (%) or Mean (SD) [Range]
Sex, Female/Male	90 (59.6%)/61 (40.4%)
Age, T1, Years	11.42 (1.08) [9–13]
Race/Ethnicity
African American	10 (6.6%)
Asian	19 (12.6%)
Biracial	29 (19.2%)
Hispanic	10 (6.6%)
Other	6 (4.0%)
White	77 (51.0%)
Pollution Burden Percentile	30.82 (21.46) [0.16–91.45]
Parent Education	4.96 (1.24) [2–8]
Income-to-Needs Ratio	1.33 (0.52) [0.05–1.97]
Depressive Symptoms, T1	2.23 (2.57) [0–11]
Depressive Symptoms, T2	2.26 (2.66) [0–13]
Depressive Symptoms, T3	3.36 (3.36) [0–13]
Mean Framewise Displacement, mm	0.16 (0.10) [0.05–0.56]

Parent education was coded as follows: 1 = no General Education Development/no high school diploma; 2 = General Education Development/high school diploma; 3 = some college; 4 = 2-year college degree; 5 = 4-year college degree; 6 = master’s degree; 7 = professional degree (M.D., J.D., D.D.S., etc.); 8 = doctorate.

T, time.