Table 3b

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.