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. Author manuscript; available in PMC: 2014 Nov 30.
Published in final edited form as: J Am Acad Child Adolesc Psychiatry. 2012 Dec 12;52(1):26–36. doi: 10.1016/j.jaac.2012.10.001

TABLE 1.

Characteristics of Randomized Clinical Trials Evaluating Psychosocial Methods for Early Disruptive Behavior Problems (κ = 36, N = 3,042)

Mean (SD) Range
Child characteristics
 Age, y 4.7 (1.5) 2.0–7.7
 % Male 72.0 (1.3) 37.0–100.0
 % Minority 33.1 (29.0) 1.0–100.0
Study characteristics
 Sample size 84.5 (48.5) 28–237
 Treatment length, wk 14.5 (7.9) 3–32
 Follow-up interval, mo 2.7 (4.1) 0–12