Table 3 Unadjusted odds ratios for factors associated with ADHD classification, NSCH 2007

BMI

 Underweight

0.88

0.65

1.20

 Normal

Ref

Ref

Ref

 Overweight

1.17

0.95

1.44

 Obese

1.45*

1.19

1.77

Sex

 Male

2.55*

2.22

2.92

 Female

Ref

Ref

Ref

Age

1.10*

1.08

1.11

Depression

 Yes

11.94*

9.75

14.61

 No

Ref

Ref

Ref

Anxiety

 Yes

9.35*

7.82

11.18

 No

Ref

Ref

Ref

Race/Ethnicity

 Non- Hispanic White

Ref

Ref

Ref

 Non-Hispanic Black

0.97

0.82

1.14

 Hispanic

0.51*

0.40

0.65

 Other

0.83

0.67

1.04

Poverty

 ≤200%

1.33*

1.17

1.51

 >200%

Ref

Ref

Ref

Family members’ smoking status

 At least one member smokes

1.98*

1.75

2.25

 No one smokes

Ref

Ref

Ref

Highest level of Education in the household

 Less than/High School Education

Ref

Ref

Ref

 More than High School Education

0.78*

0.68

0.89

Family structure

 Two parent -biological/step/adopted

0.50*

0.44

0.57

 Other - single mother/father/other

Ref

Ref

Ref

Healthcare coverage

 Yes

1.54*

1.16

2.04

 No

Ref

Ref

Ref

Participation in Sports

 Yes

0.64*

0.57

0.73

 No

Ref

Ref

Ref

Participation in Clubs

 Yes

0.78*

0.69

0.88

 No

Ref

Ref

Ref

Average computer usage during a weekday

 ≥1 hour

1.52*

1.31

1.77

 <1 hour

Ref

Ref

Ref

Average TV usage during weekday

 ≥1 hour

1.82*

1.55

2.13

 <1 hour

Ref

Ref

Ref