Table 1.
Sample characteristics in relation to ethnicity a,b.
| Caucasian | Africa American | Hispanic | Other | p | |
|---|---|---|---|---|---|
| (n = 3438) | (n = 1002) | (n = 965) | (n = 277) | ||
| Age (years), mean (SE) | 73.1 (0.1) | 72.3 (0.2) | 71.5 (0.2) | 71.3 (0.4) | <0.001 |
| Sex | 0.13 | ||||
| Men | 44.1 | 40.6 | 42.3 | 47.2 | |
| Women | 55.9 | 59.4 | 57.7 | 252.7 | |
| Weight status | <0.001 | ||||
| Normal | 25.6 | 21.8 | 18.3 | 45.3 | |
| Overweight | 38.2 | 31.4 | 41.1 | 30.9 | |
| Obesity | 36.2 | 46.8 | 40.6 | 23.8 | |
| Education level | <0.001 | ||||
| Below high school | 17.1 | 38.5 | 56.6 | 21.2 | |
| High school | 26.4 | 24.2 | 15.9 | 22.0 | |
| Higher than high school | 56.5 | 37.3 | 27.5 | 56.8 | |
| Annual household income | <0.001 | ||||
| <$25,000 | 25.6 | 44.5 | 50.5 | 30.2 | |
| $25,000 < $75,000 | 50.5 | 45.6 | 38.5 | 43.8 | |
| ≥$75,000 | 23.9 | 11.9 | 11.0 | 26.0 | |
| Leisure-time physical activity | <0.001 | ||||
| Inactive | 54.6 | 61.4 | 66.0 | 48.7 | |
| Active | 45.4 | 38.6 | 34.0 | 51.3 | |
| Smoking status | <0.001 | ||||
| Never | 47.6 | 47.6 | 53.6 | 52.9 | |
| Former | 45.4 | 38.7 | 35.5 | 35.0 | |
| Current | 7.0 | 13.7 | 10.9 | 12.1 | |
| Chronic conditions c | 0.419 | ||||
| No | 25.1 | 24.1 | 28.5 | 25.7 | |
| Yes | 74.9 | 75.9 | 71.5 | 74.3 | |
| Meeting recommended level of dietary magnesium intake | <0.001 | ||||
| No | 82.8 | 90.6 | 84.4 | 78.1 | |
| Yes | 17.2 | 9.4 | 15.6 | 21.9 | |
| Dietary magnesium intake (mg, day), mean (SE) | 276.4 (2.6) | 233.0 (4.4) | 260.8 (4.1) | 285.7 (8.9) | 0.028 |
| Total energy intake (kcal, day), mean (SE) | 1807.9 (12.9) | 1608.4 (25.9) | 1634.0 (25.6) | 1711.2 (44.5) | <0.001 |
a Values are percentages unless stated otherwise. b All estimated are weighted to be nationally representative. c Chronic conditions includes diabetes, cardiovascular disease, arthritis, and cancer.