HR* and 95% CIs for total mortality by tertiles of calcium and magnesium intake among women and men stratified by the median intake of magnesium and calcium, respectively
| Calcium intake (mg/day) | |||||
|---|---|---|---|---|---|
| <480 | 480–<600 | ≥600 | p for trend | p for interaction | |
| SWHS | |||||
| All individuals | 1.00 | 1.05 (0.96 to 1.16) | 1.08 (0.94 to 1.25) | 0.25 | 0.42 |
| Mg≤284.3† | 1.00 | 1.06 (0.95 to 1.19) | 1.19 (0.93 to1.52) | 0.15 | |
| Mg>284.3† | 1.00 | 0.84 (0.69 to 1.03) | 0.82 (0.64 to 1.05) | 0.19 | |
| SMHS | |||||
| All individuals | 1.00 | 0.90 (0.78 to 1.02) | 0.82 (0.68 to 0.99) | 0.04 | 0.11 |
| †Mg≤284.3 | 1.00 | 0.97 (0.82 to 1.14) | 0.91 (0.68 to 1.22) | 0.54 | |
| Mg>284.3† | 1.00 | 0.88 (0.67 to 1.16) | 0.75 (0.54 to 1.03) | 0.03 | |
| Magnesium intake (mg/day) | |||||
| <251 | 251–<320 | ≥320 | p for trend | p for interaction | |
| SWHS | |||||
| All individuals | 1.00 | 1.04 (0.94 to 1.15) | 1.09 (0.94 to 1.27) | 0.27 | 0.42 |
| Ca≤491‡ | 1.00 | 1.12 (0.99 to 1.26) | 1.31 (1.05 to 1.64) | 0.01 | |
| Ca>491‡ | 1.00 | 0.79 (0.64 to 0.98) | 0.70 (0.52 to 0.95) | 0.03 | |
| SMHS | |||||
| All individuals | 1.00 | 0.81 (0.70 to 0.93) | 0.87 (0.71 to 1.07) | 0.23 | 0.11 |
| Ca≤491‡ | 1.00 | 1.00 (0.82 to 1.21) | 1.59 (1.15 to 2.20) | 0.06 | |
| Ca>491‡ | 1.00 | 0.70 (0.55 to 0.88) | 0.57 (0.42 to 0.79) | 0.00 | |
*Model 2 was used. Age at entry, sex, body mass index (BMI), education, marriage status, smoking status, tea drinking, use of ginseng, alcohol drinking, use of Ca supplement, use of multivitamin, regular physical activity and intakes of total energy, saturated fatty acid, phosphorus, fibre, retinol, vitamin E, folic acid, sodium, potassium and zinc were adjusted. Ca and Mg were further adjusted to assess whether the association of Mg or Ca was independent of Ca or Mg, respectively.
†Mg, magnesium intake.
‡Ca, calcium intake.