Characteristic | Variable | n (%) | Median (interquartile range) | ||||
---|---|---|---|---|---|---|---|
DRS1 | DRS22-151 | ||||||
Sex | Male | 63 (59) | 3 (2–4) | 1 (1–3) | |||
Female | 43 (41) | 3 (2–5) | 1 (1–3) | ||||
Ethnicity | White | 44 (42) | 3 (2–5) | 1 (0–3) | |||
African-American | 56 (53) | 3 (2–5) | 3 (1–3)2-150 | ||||
Other | 6 (5) | 2 (0–2) | 1 (0–1) | ||||
Age (y) | 4–9 | 34 (32) | 4 (2–6) | 2.5 (1–3) | |||
10–14 | 41 (39) | 2 (2–4) | 1 (1–3) | ||||
15–20 | 31 (29) | 3 (2–4) | 1 (0–3) | ||||
Parental education2-152 | Low | 28 (29) | 3.5 (2–5) | 2 (1–3) | |||
Medium | 62 (63) | 3 (1–4) | 2 (1–3) | ||||
High | 8 (8) | 3 (2–3) | 0.5 (0–1.5) | ||||
Socioeconomic status2-153 | Low | 36 (34) | 2 (2–5) | 2 (1–3) | |||
Medium | 34 (32) | 3 (1–4) | 1 (1–3) | ||||
High | 36 (34) | 3 (2–5) | 1 (0.5–3.5) |
↵2-150 p<0.05.
↵2-151 Sex compared by rank sum Wilcoxon test; ethnicity, age, parental education, and socioeconomic status compared by Kruskal-Wallis test.
↵2-152 Parental education: low (less than 24 y), medium (24–32 y) and high (over 32 y) parental years of education; n=98.
↵2-153 SES based on Hollinghead's four factor index; low 0–28, medium 28–38, high 39–66.