Comparison between mothers of metal load between subgroups according to their ‘proximal exposure’. The metal load in mothers of different subgroups were compared with each other. Analysis was by multiple quantile regression on median values as linear function of the independent variable, ‘proximal exposure’. For ease in reading the data, the colour yellow indicates that the group in the column on the left in each panel has significantly higher load (p<0.05) than the one in the column on the right in the same panel. If vice versa, the line is enhanced in green colour. Panel C compares exposure subgroups 1+2 with 3; panel D compares exposure subgroups 1 with 2
Mother | ||||||||
C | ||||||||
Metal | Median exposures 1+2 | 95% CI | Median exposure3 | 95% CI | Difference | p>|t| | 95% CI - INF | 95% CI -SUP |
Al | 5.98 | 5.52 to 6.44 | 5.17 | 4.49 to 5.85 | 0.8099999 | 0.054 | −0.0130119 | 1.633012 |
Fe | 14.47 | 13.57 to 15.37 | 14.76 | 13.43 to16.09 | −0.29 | 0.723 | −1.894419 | 1.314419 |
Mg | 533 | 495.29 to 570.71 | 436 | 380.61 to 491.39 | 97 | 0.005 | 29.98938 | 164.0106 |
Mn | 0.8 | 0.73 to 0.87 | 0.58 | 0.47 to 0.69 | 0.22 | 0.001 | 0.0871368 | 0.3528633 |
Ba | 4.76 | 4.03– to 5.49 | 3.79 | 2.71 to4.87 | 0.9700003 | 0.145 | −0.3356257 | 2.275626 |
As | 0.075 | 0.07 to 0.08 | 0.059 | 0.05 to0.07 | 0.016 | 0.011 | 0.0036835 | 0.0283165 |
Cd | 0.0462 | 0.04 to 0.05 | 0.0429 | 0.03 to 0.05 | 0.0033 | 0.547 | −0.0074508 | 0.0140508 |
Co | 0.05 | 0.04 to 0.06 | 0.04 | 0.03 to0.05 | 0.01 | 0.09 | −0.0015647 | 0.0215647 |
Cr | 0.69 | 0.61 to0.77 | 0.58 | 0.46 to 0.7 | 0.11 | 0.134 | −0.0340439 | 0.254044 |
Cu | 12.7 | 11.91 to 13.49 | 12.8 | 11.64 to 13.96 | −0.1000004 | 0.888 | −1.499971 | 1.299971 |
Hg | 0.186 | 0.16 to 0.21 | 0.198 | 0.16 to 0.23 | −0.012 | 0.583 | −0.0549375 | 0.0309375 |
Ni | 0.65 | 0.57 to 0.73 | 0.46 | 0.34 to0.58 | 0.19 | 0.008 | 0.049235 | 0.330765 |
Pb | 1.52 | 1.27 to 1.77 | 1.43 | 1.07 to1.79 | 0.09 | 0.685 | −0.3461096 | 0.5261097 |
Sr | 50.2 | 46.09 to 54.31 | 45.4 | 39.36 to51.44 | 4.799999 | 0.197 | −2.504407 | 12.10441 |
Ti | 0.27 | 0.25 to 0.29 | 0.22 | 0.19 to 0.25 | 0.05 | 0.014 | 0.0102301 | 0.0897699 |
U | 0.141 | 0.12 to 0.16 | 0.177 | 0.15 to0.2 | −0.036 | 0.027 | −0.0678036 | −0.0041964 |
V | 0.454 | 0.4 to0.51 | 0.291 | 0.21 to0.37 | 0.163 | 0.001 | 0.0699174 | 0.2560826 |
W | 0.04 | 0.03 to0.05 | 0.03 | 0.02 to0.04 | 0.01 | 0.058 | −0.0003437 | 0.0203437 |
Zn | 296.35 | 270.3 to 322.4 | 250.72 | 212.45 to288.99 | 45.63 | 0.053 | −0.6644016 | 91.92441 |
D | ||||||||
Metal | Median exposure 1 | 95% CI | Median exposure 2 | 95% CI | Difference | p>|t| | 95% CI - INF | 95% CI -SUP |
Al | 6.1 | 5.538 to 6.662 | 5.76 | 4.551– to 6.969 | 0.3399997 | 0.616 | −0.993446 | 1.673445 |
Fe | 14.26 | 13.371 to15.149 | 15.91 | 13.998 to 17.822 | −1.65 | 0.125 | −3.758656 | 0.4586567 |
Mg | 518 | 475.411–560.589 | 572 | 480.429 to663.571 | −54 | 0.294 | −154.9908 | 46.99076 |
Mn | 0.77 | 0.683–0.857 | 0.89 | 0.703 to1.077 | −0.12 | 0.253 | −0.3260072 | 0.0860071 |
Ba | 5.45 | 4.585–6.315 | 3.4 | 1.54 to 5.26 | 2.05 | 0.05 | −0.0008681 | 4.100868 |
As | 0.077 | 0.069–0.085 | 0.066 | 0.049 to 0.083 | 0.011 | 0.257 | −0.0080663 | 0.0300663 |
Cd | 0.0466 | 0.04–0.053 | 0.0401 | 0.026 to 0.054 | 0.0065 | 0.418 | −0.0092689 | 0.0222689 |
Co | 0.05 | 0.042–0.058 | 0.05 | 0.033 to 0.067 | 0 | 1 | −0.0191217 | 0.0191217 |
Cr | 0.67 | 0.577–0.763 | 0.96 | 0.759 to 1.161 | −0.29 | 0.01 | −0.5112491 | −0.0687508 |
Cu | 12.7 | 11.873–13.527 | 11.9 | 10.123– to 13.677 | 0.8000002 | 0.423 | −1.160014 | 2.760014 |
Hg | 0.188 | 0.162–0.214 | 0.167 | 0.111 to 0.223 | 0.021 | 0.502 | −0.0404448 | 0.0824448 |
Ni | 0.65 | 0.549–0.751 | 0.72 | 0.504 to 0.936 | −0.0700001 | 0.564 | −0.3083581 | 0.168358 |
Pb | 1.59 | 1.328–1.852 | 1.18 | 0.616 to 1.744 | 0.4100001 | 0.196 | −0.2123387 | 1.032339 |
Sr | 48 | 44.217–51.783 | 64.7 | 56.566 to 72.834 | −16.7 | 0 | −25.67073 | −7.729264 |
Ti | 0.27 | 0.243–0.297 | 0.25 | 0.192 to 0.308 | 0.02 | 0.54 | −0.0441475 | 0.0841475 |
U | 0.13 | 0.114–0.146 | 0.184 | 0.15 to 0.218 | −0.054 | 0.005 | −0.0916994 | −0.0163006 |
V | 0.453 | 0.395–0.511 | 0.519 | 0.395 to 0.643 | −0.066 | 0.343 | −0.2028334 | 0.0708334 |
W | 0.03 | 0.016–0.044 | 0.11 | 0.079 to 0.141 | −0.08 | 0 | −0.1136928 | −0.0463072 |
Zn | 296.93 | 264.64–329.22 | 292.94 | 223.512 to 362.368 | 3.98999 | 0.918 | −72.57932 | 80.5593 |
*Al, aluminium; Fe, iron; Mg, magnesium; Mn, manganese; Ba, barium; As, arsenic; Cd, cadmium; Co, cobalt; Cr, chromium; Cs, cesium; Cu, copper; Hg, mercury; Ni, nickel; Pb, lead; Sr, strontium; Ti, titanium; U, uranium; V, vanadium; W, tungsten; Zn, zinc.