Table 6. Overall Demographics for the National Health and Nutrition Examination Survey (NHANES).
| Mean | Standard Deviation | |
|---|---|---|
| Age (years) | 36.49 | 22.09 |
| Gender, female % | 51.03 | |
| Race, % | ||
| Mexican | 9.88 | |
| Non-Hispanic White | 66.26 | |
| Non-Hispanic Black | 12.23 | |
| Other Hispanic | 5.39 | |
| Other Multiracial | 6.24 | |
| Education, % | ||
| <9th Grade | 6.86 | |
| > = 9th Grade, <HS graduate | 13.65 | |
| HS graduate or GED equivalent | 25.48 | |
| Some college | 2.88 | |
| College graduate and beyond | 25.21 | |
| Income, % | ||
| <$20,000 | 1.61 | |
| $20,000-$44,999 | 26.81 | |
| $45,000-$74,999 | 21.57 | |
| $75,000 and up | 31.81 | |
| >$20,000 | 3.71 | |
| Glaucoma, % | 4.71 | |
| Hypothyroidism, % | 9.77 | |
| BMI | 26.43 | 7.30 |
| Diabetes, % | ||
| Yes | 6.41 | |
| Borderline | 1.18 | |
| Heart attack, % | 3.30 | |
| Stroke, % | 3.17 | |
| Smoking, % | ||
| Current | 22.79 | |
| Former | 24.11 | |
| Never | 53.10 | |
| Alcohol, % | ||
| 0 | 36.54 | |
| >0 and <1 | 47.03 | |
| ≧1 and <2 | 9.33 | |
| ≥2 and <4 | 5.23 | |
| ≥4 | 1.87 | |
| General health condition, % | ||
| Excellent-Good | 45.54 | |
| Fair | 38.48 | |
| Poor | 15.98 |