Table 2. Quantile regression coefficient (P-value) of dietary mineral intakes and BMI (NHANES, 2007–2014)a.
| Modelc | Minerals | Quantilesb | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 0.1 | 0.2 | 0.3 | 0.4 | 0.5 | 0.6 | 0.7 | 0.8 | 0.9 | ||
| 1 | Ca | −0.19 (0.07) | −0.26 (0.06) | −0.38 (<0.01) | −0.50 (<0.01) | −0.66 (<0.01) | −0.70 (<0.01) | −0.71 (<0.01) | −0.76 (<0.01) | −0.69 (0.08) |
| Mg | −1.44 (<0.01) | −1.97 (<0.01) | −2.66 (<0.01) | −3.43 (<0.01) | −3.95 (<0.01) | −4.82 (<0.01) | −4.83 (<0.01) | −4.75 (<0.01) | −5.01 (<0.01) | |
| Na | 0.11 (0.22) | 0.22 (<0.01) | 0.27 (<0.01) | 0.33 (<0.01) | 0.38 (<0.01) | 0.52 (<0.01) | 0.60 (<0.01) | 0.93 (<0.01) | 1.02 (<0.01) | |
| K | −0.20 (0.03) | −0.21 (0.02) | −0.28 (<0.01) | −0.59 (<0.01) | −0.69 (<0.01) | −0.81 (<0.01) | −0.86 (<0.01) | −0.97 (<0.01) | −1.00 (<0.01) | |
| Fe | −2.35 (0.66) | −6.26 (0.17) | −9.79 (0.11) | −19.40 (<0.01) | −22.19 (<0.01) | −15.31 (0.11) | −9.76 (0.17) | −14.99 (0.16) | 11.22 (0.62) | |
| 2 | Cu | −0.05 (0.43) | −0.08 (0.15) | −0.24 (<0.01) | −0.25 (<0.01) | −0.33 (<0.01) | −0.37 (<0.01) | −0.30 (0.02) | −0.21 (0.10) | −0.21 (0.05) |
| 3 | P | 0.35 (0.11) | 0.53 (<0.01) | 0.43 (0.02) | 0.22 (0.34) | 0.01 (0.98) | 0.01 (0.97) | 0.02 (0.95) | 0.18 (0.62) | 0.55 (0.24) |
| 4 | Se | 0.27 (0.71) | 0.24 (0.76) | 0.22 (0.76) | 0.20 (0.70) | 0.17 (0.81) | 0.15 (0.87) | 0.11 (0.91) | 0.08 (0.95) | 0.01 (0.99) |
| 5 | Zn | −2.02 (0.77) | −2.63 (0.36) | −3.83 (0.40) | −6.89 (0.23) | −9.24 (0.06) | −12.01 (0.04) | −14.60 (0.02) | −12.83 (0.10) | −12.30 (0.24) |
Notes:
a
Calculated using quantile regression, models adjusted for age, gender, energy.
b
Quantile regression coefficient and P-value.
c
Model 1, Quantile regression analysis of independent variables without collinearity and BMI; Model 2–5, Quantile regression analysis of BMI and collinear independent variables, respectively.
Ca, Calcium; Mg, Magnesium; Cu, Copper; Na, Sodium; K, Potassium; Fe, Iron; P, Phosphorus; Se, Selenium; Zn, Zinc.