Table 2 |
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|
Characteristics of the three supplement user groups: multiple dietary supplement users (Multiple Supp) from Shaklee, and multivitamin/mineral users (Single Supp) and non-users (No Supp) from NHANES 2001–2002. |
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| Characteristic |
No Supp n = 602 |
Single Supp n = 176 |
Multiple Supp n = 278 |
P-value* |
|
|
||||
| Sex (% female) |
40.5 |
44.6 |
57.9 |
<0.0001 |
| Race (% white) |
100 |
100 |
98.9 |
|
| Age, years (mean, SE) |
53.7 (0.59) |
57.0 (0.99) |
63.3 (0.48) |
<0.001 |
| BMI, kg/m2 (mean, SE) |
29.4 (0.32) |
27.9 (0.46) |
25.9 (0.31) |
<0.001 |
| Education (%) |
<0.0001 |
|||
| < High School Graduate |
16.8 |
14.7 |
1.8 |
|
| High School Graduate |
29.1 |
30.1 |
12.2 |
|
| > High School Graduate |
54.2 |
55.2 |
86.0 |
|
| Annual income (%) |
<0.0001 |
|||
| < $30,000 |
19.7 |
17.3 |
2.5 |
|
| $30,000–39,999 |
16.4 |
14.4 |
6.8 |
|
| $40,000–49,999 |
18.2 |
19.9 |
4.7 |
|
| $50,000–59,999 |
6.9 |
10.2 |
13.3 |
|
| $60,000–69,999 |
6.3 |
3.3 |
10.8 |
|
| ≥ $70,000 |
32.6 |
34.9 |
61.9 |
|
|
|
||||
|
*Differences among the supplement user groups were evaluated using chi-square methods for categorical variables and one-way analysis of variance for continuous variables. BMI = body mass index. |
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|
Block et al. Nutrition Journal 2007 6:30 doi:10.1186/1475-2891-6-30 |
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