Table 2 Demographic characteristics of the cognitive interview participants

Age in years:

Range (mean)

9–11 (9.8)

12–17 (14.8)

19–36 (28.4)

31–56 (41)

Gender: males/females

2/3

4/1

2/3

2/3

Level of education

4^th–6^th grade

(two aged 9 in 4^th grade; two aged 10 in 5^th grade; one aged 11 in 6^th grade)

6^th–11^th grade

(one aged 12 in 6^th grade; one aged 14 and one aged 15 in 8^th grade; one aged 16 in 9^th grade, one aged 17 in 11^th grade)

11^th–12^th grade

(highest obtained)

11^th–12^th grade

(highest obtained)