TABLE 2.
Dietary calcium (Ca) among US adults (≥18 years) in National Health and Nutrition Examination Survey (NHANES) 2007–2016.
| Age (year) | RDAsc for calcium (mg/day) | Calcium intake (mg/day) | P |
| 18–24a | 1,350.00 | 1,207.6 (570.4) | <0.001 |
| 25–65a | 1,000.00 | 1,078 (682.0) | <0.001 |
| >65a | 1,500.00 | 882.4 (497.9) | <0.001 |
| 18–24b | 1,350.00 | 878.7 (518.6) | <0.001 |
| 25–50b | 1,000.00 | 880.6 (494.0) | <0.001 |
| >50b | 1,500.00 | 813.4 (460.1) | <0.001 |
| Pregnant | 1,350.00 | 1,040.4 (570.4) | <0.001 |
a, Male; b, female; RDAc, recommended dietary allowance.