| Sample size (n) | 1,681 | 1,727 | 1,834 | 1,816 | 1,836 | 8,894 |
| Magnesium intake | | | | | | |
| Mean (mg/day) | 138 | 216 | 281 | 361 | 581 | 334 |
| Range (mg/day) | 0–183 | 184–246 | 247–315 | 316–417 | 418–2437 | 0–2437 |
| Deficient intake (%) | 100 | 100 | 58.5 | 18.1 | 0 | 54.0 |
| Depression (PHQ-9 score) | | | | | | |
| Mean | 4.1 | 3.3 | 2.8 | 2.8 | 2.8 | 3.1 |
| Range | 0–27 | 0–27 | 0–24 | 0–25 | 0–27 | 0–27 |
| Depressed (score ≥5) (%) | 32.2 | 24.5 | 20.5 | 20.5 | 21.1 | 23.2 |
| Mean age (years) | 44.6 | 45.8 | 46.2 | 46.9 | 46.5 | 46.1 |
| Senior (≥65 years old) (%) | 16.6 | 16.5 | 16.7 | 14.7 | 13.9 | 15.5 |
| Race/ethnicity (%) | | | | | | |
| Mexican-American | 15.9 | 17.4 | 18.5 | 18.2 | 17.7 | 17.6 |
| Other Hispanic | 12.6 | 12.4 | 11.1 | 9.3 | 8.7 | 10.8 |
| Non-Hispanic white | 39.2 | 44.1 | 46.6 | 52.1 | 57.3 | 48.1 |
| Non-Hispanic black | 28.7 | 21.8 | 18.9 | 15.9 | 12.1 | 19.3 |
| Other | 3.6 | 4.2 | 4.9 | 4.5 | 4.3 | 4.3 |
| Male sex (%) | 26.9 | 38.8 | 46.2 | 53.5 | 63.2 | 47.4 |
| Social (%) | | | | | | |
| High school graduate | 73.6 | 80.8 | 82 | 86.5 | 86.7 | 82.5 |
| Married (or living as married) | 54.9 | 58.2 | 62.7 | 66.1 | 68.0 | 62.6 |
| Food insecurity | 23.4 | 16.3 | 13.5 | 11.0 | 10.8 | 14.4 |
| Household income <$35,000/year | 47.8 | 33.2 | 29.6 | 23.2 | 24.4 | 30.5 |
| Habits | | | | | | |
| Current smoker (%) | 31.2 | 20.9 | 20.5 | 20 | 17.7 | 21.5 |
| Mean drinks per day | 0.4 | 0.5 | 0.5 | 0.7 | 0.7 | 0.6 |
| Chronic disease (%) | | | | | | |
| Diabetes | 11 | 9.6 | 8.4 | 8.4 | 8.2 | 9 |
| Kidney disease | 3.7 | 1.9 | 1.2 | 0.7 | 1.1 | 1.6 |
| Dietary folate equivalent intake† (%) | 58.6 | 23.2 | 9.1 | 3.4 | 1.5 | 16.5 |