Table 4.
Odds ratios (95% confidence intervals) of anemia across quartiles of dietary magnesium intake.
| Magnesium intake (mg/d) | Event (%) | Crude model | Model 1 | Model 2 | |||
|---|---|---|---|---|---|---|---|
| OR (95% CI) | P value | OR (95% CI) | P value | OR (95% CI) | P value | ||
| Magnesium (log2 transform) | 1,476 (11) | 0.66 (0.61~0.7) | <0.001 | 0.78 (0.72~0.84) | <0.001 | 0.78 (0.68~0.91) | 0.002 |
| Q1 (<179) | 434 (29.40) | 1(Ref) | 1(Ref) | 1(Ref) | |||
| Q2 (179–239) | 301 (20.39) | 0.65 (0.56~0.76) | <0.001 | 0.72 (0.61~0.84) | <0.001 | 0.76 (0.63~0.92) | 0.008 |
| Q3 (239–304) | 297 (20.12) | 0.63 (0.54~0.74) | <0.001 | 0.76 (0.64~0.9) | 0.002 | 0.83 (0.67~1.02) | 0.097 |
| Q4 (304–395) | 258 (17.48) | 0.55 (0.46~0.64) | <0.001 | 0.71 (0.6~0.84) | <0.001 | 0.78 (0.61~1) | 0.066 |
| Q5 (>395) | 186 (12.60) | 0.38 (0.32~0.45) | <0.001 | 0.56 (0.47~0.68) | <0.001 | 0.64 (0.46~0.89) | 0.011 |
| P for trend | <0.001 | <0.001 | 0.035 | ||||
Crude model adjusted for none. Model 1 adjusted for age, gender and race. Model 2 adjusted for all covariates listed in Table 1.