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. Author manuscript; available in PMC: 2016 Dec 1.
Published in final edited form as: Int J Methods Psychiatr Res. 2015 Jul 23;24(4):266–274. doi: 10.1002/mpr.1471

Table 1. Child Population Estimates (Percentage Distributions).

Variable NHIS Main Sample (NHIS Sample Child Weights) Final Study Sample (Design Weights1) Final Study Sample (Final Sample Weights2)
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 Score3
 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 Score3
 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.

1

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

2

Final 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.

3

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