From: Toxic metal mixtures in private well water and increased risk for preterm birth in North Carolina
Model | Interpretation | Crude OR (95% CI) | Adjusted* OR (95% CI) | Adjusted weights | Adjusted coefficients | ||
---|---|---|---|---|---|---|---|
A) Standard quantile-based g-computation | Increasing all metals by one quartile (ppb) | 0.97 (0.96,0.98) | 1.00 (0.99,1.02) | Cadmium Lead Chromium Zinc Arsenic Copper Manganese | 0.52 0.33 0.15 -0.37 -0.36 -0.20 -0.07 | Cadmium Lead Chromium Zinc Arsenic Copper Manganese | 0.015 0.009 0.004 -0.009 -0.009 -0.005 -0.002 |
B) Positive direction partial effects quantile-based g-computation | Increasing all metals that were in the positive direction in the training set by one quartile (ppb) | 1.00 (0.99,1.01) | 1.02 (1.01,1.03) | Cadmium Lead Chromium | 0.65 0.20 0.15 | Cadmium Lead Chromium | 0.012 0.004 0.003 |
C) Negative direction partial effects quantile-based g-computation | Increasing all metals that were in the negative direction in the training set by one quartile (ppb) | 0.96 (0.95,0.97) | 0.99 (0.97,1.00) | Zinc Arsenic Copper Manganese | -0.51 -0.43 -0.05 1.00 | Zinc Arsenic Copper Manganese | -0.007 -0.006 -0.001 0.001 |