Factors and common conditions associated with adolescent dietary supplement use: an analysis of the National Health and Nutrition Examination Survey (NHANES)

Table 1 Characteristics of the 1999–2002 NHANES sample of US adolescents

Demographic Factors	N = 5306	Weighted Percent
Age
11–15 years old	2919	56
16–19 years old	2387	44
Gender
Female	2672	49
Male	2634	51
Race/Ethnicity
Non-Hispanic White	1375	61
Non-Hispanic Black	1575	15
Mexican American	1956	11
All others	400	14
Family income
< $15,000	1212	20
$15,000 – $34,999	1510	25
$35,000 – $64,999	1096	25
>$65,000	939	28
Refused or don't know	187	3
Clinical Factors
Health status
Excellent/very good	3320	71
Good	1515	23
Poor/fair	468	6
Prescription medication user
No	4203	73
Yes	1101	27
Individual conditions
Asthma	815	16
ADHD	356	9
Hayfever	583	13
Headache	1290	23
Obesity	650	10

ISSN: 2662-7671