Table 3a

Comparison between mothers of metal load between subgroups according to their ‘proximal exposure’. The metal load in mothers from 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 first column of each panel has significantly higher load (p<0,05) than the one in the second column of the same panel. If vice versa, the line is enhanced in green colour. Panel A compares exposure subgroups 1 with 3; panel B compares exposure subgroups 1 with subgroups 2+3

Metal Median exposure 1 95% CI Median exposure 3 95% CI Difference p>|t| 95% CI - INF 95% CI -SUP
 Al6.15.59 to 6.615.174.49 to5.850.92999980.0320.08134381.778656
 Fe14.2613.33 to 15.1914.7613.52 to16−0.50.527−2.0532291.053229
 Mg518476.47 to 559.53436380.7 to491.3820.0212.8438151.1562
 Mn0.770.69 to 0.850.580.48 to0.680.190.0040.05944750.3205525
 Ba5.454.62 to 6.283.792.69 to4.891.660.0180.28014813.039852
 As0.0770.07 to 0.080.0590.05 to0.070.0180.0070.00488240.0311176
 Cd0.04660.04 to 0.050.04290.03 to0.050.00370.537−0.00806320.0154632
 Co0.050.04 to to0.050.010.087−0.00145290.0214529
 Cr0.670.59 to 0.750.580.47 to0.690.090.2−0.04774620.2277463
 Cu12.711.88 to 13.5212.811.71 to13.89−0.10000040.885−1.4636991.263698
 Hg0.1880.16 to 0.220.1980.16 to0.24−0.010.677−0.05715680.0371568
 Ni0.650.56 to 0.740.460.34 to0.580.190.010.04617670.3338233
 Pb1.591.32 to 1.861.431.07 to1.790.16000010.479−0.28429910.6042993
 Sr4844.06 to 51.9445.440.16 to50.642.5999980.436−3.9535969.153592
 Ti0.270.24 to to0.250.050.0240.00662970.0933703
 U0.130.11 to 0.150.1770.15 to0.2−0.0470.003−0.0779462−0.0160538
 V0.4530.4 to 0.510.2910.22 to0.370.1620.0010.06820580.2557942
 W0.030.03 to to0.0401−0.00763530.0076353
 Zn296.93270.11 to 323.75250.72215 to286.4446.209990.0431.54247590.87751
Metal Median exposure 1 95% CI Median exposures 2+3 95% CI Difference p>|t| 95% CI - INF 95% CI -SUP
 Al6.15.57 to 6.635.324.72 to5.920.77999970.058−0.02683461.586834
 Fe14.2613.29 to 15.2314.913.81to 15.99−0.63999940.389−2.0995360.8195368
 Mg518475.04 to 560.96480431.36 to 528.64380.25−26.89435102.8944
 Mn0.770.68 to 0.860.660.56 to 0.760.110.106−0.02328210.243282
 Ba5.454.65 to6.253.622.71 to 4.531.830.0030.61964773.040352
 As0.0770.07 to0.080.0620.05 to 0.070.0150.0120.00332050.0266795
 Cd0.04660.04 to0.050.04210.03 to 0.050.00450.411−0.00624380.0152438
 Co0.050.04 to0.060.040.03 to
 Cr0.670.57– to 0.770.640.53 to 0.750.030.687−0.11619840.1761984
 Cu12.711.87 to 13.5312.611.66 to 13.540.09999940.875−1.149161.349159
 Hg0.1880.16 to 0.210.1890.16 to 0.22−0.0010.961−0.04106960.0390696
 Ni0.650.56 to 0.740.510.41 to 0.610.140.0430.0044860.2755139
 Pb1.591.32 to 1.861.331.02 to 1.640.260.213−0.14922020.6692202
 Sr4843.66 to 52.3450.745.79 to 55.61−2.7000010.418−9.2484743.848473
 Ti0.270.24 to to
 U0.130.11 to to 0.2−0.050.001−0.0790813−0.0209187
 V0.4530.39 to0.510.350.28 to 0.420.1030.030.01021380.1957863
 W0.030.02 to0.040.040.03 to 0.05−0.010.026−0.0188125−0.0011875
 Zn296.93268.87 to324.99262.18230.41 to 293.9534.750.108−7.63944677.13945
  • *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.