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. 2012 Sep 10;120(11):1578–1584. doi: 10.1289/ehp.1205391

Table 1.

Statistical uncertainty of predicted and observed ICs [means (95% CIs)] for mixtures.

Inhibition level x Inhibition concentration ICX(mixture) [M]
Observed Predicted by CA Predicted by IA
8 pesticides (IC01)a
10% 1.65E-6 (1.11E-6, 2.21E-6) 2.12E-6 (1.87E-6, 2.29E-6) 5.47E-6 (4.10E-6, 6.18E-6)*
50% 9.74E-6 (7.91E-6, 1.07E-5) 9.66E-6 (9.00E-6, 1.03E-5) 1.35E-5 (1.20E-5, 1.46E-5)*
8 pesticides (IC10)a
10% 1.49E-6 (1.23E-6, 1.85E-6) 1.87E-6 (1.64E-6, 2.03E-6) 4.57E-6 (3.46E-6, 5.26E-6)*
50% 8.79E-6 (7.55E-6, 1.04E-5) 9.13E-6 (8.53E-6, 9.76E-6) 1.32E-5 (1.17E-5, 1.45E-5)*
5 pesticides (IC01)a
10% 1.03E-5 (8.25E-6, 1.21E-5) 6.73E-6 (5.86E-6, 7.82E-6)* 1.39E-5 (1.13E-5, 1.66E-5)
50% 3.35E-5 (2.95E-5, 3.78E-5) 2.80E-5 (2.58E-5, 3.09E-5) 3.60E-5 (3.28E-5, 4.10E-5)
5 pesticides (IC10)a
10% 8.97E-6 (6.77E-6, 1.20E-5) 6.38E-6 (5.47E-6, 7.28E-6) 1.33E-5 (9.93E-6, 1.67E-5)
50% 3.54E-5 (3.11E-5, 4.06E-5) 2.89E-5 (2.68E-5, 3.19E-5) 3.77E-5 (3.41E-5, 4.32E-5)
13 pesticides (IC01)a
10% 5.56E-6 (4.38E-6, 7.39E-6) 3.89E-6 (3.55E-6, 4.16E-6)* 1.38E-5 (1.06E-5, 1.52E-5)*
50% 2.61E-5 (2.38E-5, 2.95E-5) 1.70E-5 (1.61E-5, 1.80E-5)* 3.11E-5 (2.83E-5, 3.37E-5)
13 pesticides (IC10)a
10% 5.20E-6 (3.47E-6, 7.28E-6) 3.61E-6 (3.24E-6, 3.88E-6) 1.11E-5 (8.24E-6, 1.27E-5)*
50% 2.86E-5 (2.68E-5, 3.01E-5) 1.71E-5 (1.63E-5, 1.80E-5)* 3.14E-5 (2.81E-5, 2.81E-5)
13 pesticides (IC20)a
10% 3.25E-6 (2.28E-6, 4.91E-6) 3.48E-6 (3.14E-6, 3.75E-6) 1.01E-5 (7.30E-6, 1.17E-5)*
50% 2.42E-5 (2.09E-5, 2.89E-5) 1.71E-5 (1.63E-5, 1.80E-5)* 3.06E-5 (2.72E-5, 3.35E-5)
13 pesticides (IC50)a
10% 5.41E-6 (3.70E-6, 7.44E-6) 3.35E-6 (2.99E-6, 3.64E-6)* 9.14E-6 (6.47E-6, 1.08E-5)
50% 3.24E-5 (2.70E-5, 3.67E-5) 1.75E-5 (1.65E-5, 1.85E-5)* 2.89E-5 (2.57E-5, 3.20E-5)
aSee Supplemental Material, Table S1 (http://dx.doi.org/10.1289/ehp.1205391) for mixture ratios. *Statistically significant compared with observed ICs. Significance between predicted and observed ICX values was judged as a non-overlapping of their 95% percentile bootstrap CIs.