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Table 4 Correlates of past year nonmedical ADHD medication use

From: The nonmedical use of prescription ADHD medications: results from a national Internet panel

 

Sample

Unadjusteda

Adjusteda

 

%b

OR

95% CI

OR

95% CI

Age

     

   18–25

4.34

3.52

1.76–7.08

1.89

0.87–3.64

   26–49

1.27

1.00

   

Sex

     

   Female

1.66

0.69

0.35–1.36

1.03

0.48–2.22

   Male

2.37

1.00

 

1.00

 

Race/ethnicity

     

   White

2.35

1.00

   

   Nonwhite

1.36

0.57

0.30–1.09

0.59

0.29–1.19

Education

     

   Less than high school graduate

1.21

0.65

0.30–1.42

0.81

0.33–1.95

   High school graduate

1.85

1.00

 

1.00

 

   Some college

3.26

1.79

0.78–4.09

1.72

0.72–4.13

   College graduate

1.41

0.76

0.37–1.55

0.75

0.33–1.71

Student status (age 18–25) c

     

   College student

4.57

1.10

0.67–1.81

  

   Nonstudent

4.18

1.00

   

Insurance

     

   Public

2.12

1.00

 

1.00

 

   Private

1.69

0.80

0.42–1.51

0.79

0.40–1.58

ADHD status

     

   No dx w/meds lifetime

1.53

1.00

 

1.00

 

   Meds in lifetime, but not past year.

8.94

6.31

1.84–21.44

6.04

1.72–21.15

   Meds in past year

25.57

22.08

9.53–51.18

9.95

2.55–38.85

Past-month binge alcohol use d

     

   No

0.90

1.00

 

1.00

 

   Yes

4.46

5.13

2.48–10.63

4.38

1.70–27.42

Past-year marijuana use

     

   No

1.09

1.00

 

1.00

 

   Yes

7.41

7.29

3.51–15.16

16.78

6.66–42.27

Past-year methamphetamine use

     

   No

1.70

1.00

 

1.00

 

   Yes

45.50

48.27

20.62–112.91

2.00

0.76–5.29

Past-year cocaine use

     

   No

1.33

1.00

 

1.00

 

   Yes

26.23

26.37

11.23–61.92

2.73

1.13–6.60

  1. ADHD = Attention deficit hyperactivity disorder; CI = Confidence interval; OR = Odds ratio (1.00 = reference group).
  2. a Unadjusted models are bivariate associations. The adjusted model was a single model that included all the characteristics listed in this table as covariates.
  3. b Weighted to the U.S. population of noninstitutionalized civilian adults, aged 18 to49.
  4. c Student status was not estimated in the adjusted model.
  5. d Defined as having five or more drinks in a single occasion at least once in the past 30 days.