Table 1.

Child population estimates (percentage distributions)

Variable	NHIS main sample (NHIS sample child weights)	Final study sample (design weightsa)	Final study sample (final sample weightsb)
Age group
4–11	57.2	66.2	57.2
12–17	42.8	33.8	42.8
Gender
Male	51.2	47.4	51.2
Female	48.8	52.6	48.8
Race/ethnicity
Non‐Hispanic White	54.2	55.8	54.2
Non‐Hispanic Black	13.1	19.9	13.1
Non‐Hispanic Other	9.9	16.4	9.9
Hispanic	22.8	7.9	22.8
NHIS 5‐item SDQ Score 3
0	32.0	30.4	31.6
1	23.6	23.1	20.1
2	20.0	17.4	19.5
3	10.3	14.3	13.0
4	6.1	7.1	8.3
5	3.7	4.0	3.9
6	2.4	2.0	2.1
7	0.9	0.6	0.5
8	0.6	0.6	0.5
9	0.2	0.4	0.5
10	0.0	0.0	0.0
NHIS SDQ Impact Item Score c
0	80.1	81.4	78.6
1	14.4	15.4	17.0
2	4.1	2.2	3.1
3	1.3	1.1	1.3

NHIS = National Health Interview Survey; SDQ = Strengths and Difficulties Questionnaire.

^aDesign weight is the NHIS sample child weight multiplied by reciprocal of study sample selection probability.

^bFinal sample weight is the design weight modified by nonresponse adjustments and post‐stratification adjustments to match the NHIS control totals by age group, gender, and race/ethnicity.

^cCases with missing SDQ score and impact item score values were excluded from this table.