Table 4.
Joint association of dietary calcium and magnesium on headache.
| No. | OR (95% CI)a | P-value | No. | OR (95% CI) | P-value | |
|---|---|---|---|---|---|---|
| All individuals | Low Ca intakeb | High Ca intakec | ||||
| Low Mg intakeb | 1,210 | 1 (Ref.) | 950 | 0.93 (0.76, 1.15) | 0.501 | |
| High Mg intakec | 950 | 0.87 (0.70, 1.09) | 0.224 | 7,688 | 0.77 (0.64, 0.91) | 0.003 |
| Women | Low Ca intakeb | High Ca intakec | ||||
| Low Mg intakeb | 765 | 1 (Ref.) | 389 | 0.93 (0.70, 1.24) | 0.617 | |
| High Mg intakec | 298 | 0.87 (0.61, 1.18) | 0.154 | 3,820 | 0.74 (0.60, 0.92) | 0.006 |
| Men | Low Ca intakeb | High Ca intakec | ||||
| Low Mg intakeb | 445 | 1 (Ref.) | 173 | 1.00 (0.60, 1.68) | 0.999 | |
| High Mg intakec | 239 | 0.73 (0.44, 1.22) | 0.235 | 4,669 | 0.98 (0.72, 1.36) | 0.940 |
Ca, calcium; Mg, magnesium.
a
Adjusted for age, sex, race/ethnicity, smoking, drinking, marital, education level, BMI, energy intake, protein intake, carbohydrate intake, calcium supplement, magnesium supplement, vitamin D supplement, hypertension, diabetes, stroke, coronary heart disease, C reactive protein, and total cholesterol.
b
The lowest quintile intake of calcium or magnesium (Q1).
c
The second to fifth quintiles intake of calcium or magnesium (Q2–Q5).