Table 3.
Nutrient | Quartiles | Median | Range | Cases | HR | 95% CI | P-trend | |
---|---|---|---|---|---|---|---|---|
Calcium (mg/day) | 1 | 254 | <321 | 136 | Reference | |||
2 | 382 | 321-441 | 112 | 0.90 | 0.70, | 1.17 | ||
3 | 504 | 441-578 | 95 | 0.77 | 0.58, | 1.02 | ||
4 | 687 | >578 | 85 | 0.66 | 0.48, | 0.91 | 0.007 | |
Magnesium (mg/day) | 1 | 193 | <222 | 130 | Reference | |||
2 | 244 | 222-266 | 93 | 0.79 | 0.59, | 1.05 | ||
3 | 290 | 266-319 | 110 | 0.95 | 0.69, | 1.30 | ||
4 | 365 | >319 | 95 | 0.81 | 0.54, | 1.23 | 0.50 | |
Phosphorus (mg/day) | 1 | 669 | <773 | 140 | Reference | |||
2 | 855 | 773-935 | 93 | 0.68 | 0.51, | 0.91 | ||
3 | 1021 | 935-1124 | 111 | 0.81 | 0.59, | 1.11 | ||
4 | 1286 | >1124 | 84 | 0.55 | 0.36, | 0.85 | 0.02 | |
Ca:Mg ratio | 1 | 1.18 | <1.33 | 142 | Reference | |||
2 | 1.47 | 1.33-1.61 | 95 | 0.75 | 0.58, | 0.97 | ||
3 | 1.78 | 1.61-1.96 | 109 | 0.87 | 0.68, | 1.12 | ||
4 | 2.17 | >1.96 | 82 | 0.62 | 0.47, | 0.82 | 0.003 |
Adjusted for age, total caloric intake, income, occupation, passive smoking, history of asthma and BMI. The median value of each quartile was used to test for linear trend.