Table 1.

Demographic Characteristics for Sample (n=6521)

Variable	Mean (SD; Range) or N(%)
Age (Months)	119.49 (7.54; 107–132)
Sex, female	3200 (49.1)
Ethnicity
Caucasian	3695 (56.7)
African American	766 (11.7)
Hispanic	1262 (19.4)
Asian	138 (2.1)
Other	660 (10.1)
Financial Adversity	0.4 (1.02; 0–7)
Average Motion (mm)	0.3 (0.28; 0.02–3.11)
Scanner Type
Siemens	4971 (76.2)
GE	1550 (23.8)
PQ-BC Score	2.29 (3.28; 0–20)
Log-transformed PQ-BC Score	−0.17 (0.36; −0.52–0.81)
Depressive Symptoms	0.23 (1.03; 0–13)

Note. GE=General Electric; PQ-BC=Prodromal Questionnaire- Brief Child Version. Age is measured in months. Sex is a dichotomous variable scored as either male or female. Ethnicity was scored as either Caucasian, African American, Hispanic, Asian, or Other (e.g., biracial). Financial adversity is measured on a scale from 0 to 7. Average motion is calculated as average framewise displacement in mm. Scanner type consisted of 2 manufacturers (Siemens and GE). PQ-BC score is on a scale from 0 to 21. Depressive Symptom score is on a scale from 0 to 13.