TABLE 4.

Characteristics Associated With High SDM Among Children With ADHD

Variable	High SDM (Unadjusted), %	High SDM (Standardizeda), % (95% CI)	P
Demographic characteristic
Gender
Male	65.2	73.6 (69.2–77.9)	Baseline
Female	65.7	73.0 (67.9–78.1)	.85
Race
White	65.6	72.9 (68.9–77.0)	Baseline
Black	63.3	73.7 (66.1–81.4)	.83
Other	66.1	76.5 (65.5–87.5)	.56
Parental education
No degree	62.5	74.0 (65.7–82.3)	Baseline
High school complete	64.7	73.8 (68.9–78.8)	.97
Bachelor’s degree	62.2	70.8 (62.5–79.1)	.60
Graduate-level degree	61.5	66.8 (53.8–79.9)	.38
Other degree	73.7	78.8 (72.1–85.4)	.33
Insurance coverage
Any private	68.0	75.0 (70.3–79.6)	Baseline
Public	60.2	70.2 (64.5–75.9)	.21
None	60.2	70.0 (44.6–94.8)	.67
Health status
General health: score on Child Health Questionnaire items
Low (worst health)	51.0	63.7 (54.4–72.9)	Baseline
Medium	58.8	67.2 (61.2–73.3)	.37
High (best health)	73.2	76.6 (72.6–80.5)	.003
Behavioral impairment: Columbia Impairment Scale (only includes children ≥5 y old)
Unimpaired	75.4	75.1 (70.9–79.2)	Baseline
Impaired	57.0	62.2 (57.1–67.3)	<.001
Access to care
Difficulty in getting to usual source of care
Very difficult	44.8	64.8 (45.3–84.4)	Baseline
Somewhat difficult	69.1	73.9 (63.9–83.9)	.43
Not too difficult	60.9	72.8 (66.6–79.0)	.38
Not at all difficult	67.5	73.5 (69.3–77.7)	.35
Difficulty in contacting usual source of care by telephone
Very difficult	43.2	54.8 (38.6–70.9)	Baseline
Somewhat difficult	45.5	57.7 (47.2–68.1)	.74
Not too difficult	56.7	66.2 (59.5–72.9)	.18
Not at all difficult	75.6	80.6 (76.7–84.6)	<.001

^aMarginal standardization was used for comparisons and can be interpreted as the fraction of subjects who would engage in full participation if standardized to the characteristics of the entire sample.