Table 2 Single pollutant percentiles of concentration (ng/m3), full pregnancy period, for ASD interviewed cases (n = 217) and controls (n = 224) and birth certificate cases (n = 216) and controls (n = 4,971)
Class | Compounds (Concentration In ng/m3) | Cases (217) | Controls (224) | Cases (216) | Second Controls (4,971) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
25 | 50 | 75 | 25 | 50 | 75 | 25 | 50 | 75 | 25 | 50 | 75 | ||
Metal Compounds | Arsenic | 1.03 | 1.14 | 1.33 | 0.98 | 1.11 | 1.30 | 1.02 | 1.13 | 1.33 | 1.00 | 1.13 | 1.35 |
Cadmium | 0.13 | 0.15 | 0.18 | 1.13 | 0.15 | 0.18 | 0.13 | 0.15 | 0.18 | 0.12 | 0.15 | 0.19 | |
Chromium | 1.59 | 1.80 | 2.40 | 1.54 | 1.74 | 2.06 | 1.58 | 1.79 | 2.30 | 1.55 | 1.79 | 2.18 | |
Mercury | 0.04 | 0.05 | 0.08 | 0.04 | 0.06 | 0.08 | 0.04 | 0.05 | 0.08 | 0.04 | 0.06 | 0.08 | |
Manganese | 1.71 | 2.10 | 2.38 | 1.78 | 2.08 | 2.27 | 1.66 | 2.07 | 2.36 | 1.71 | 2.08 | 2.30 | |
Nickel | 0.79 | 0.91 | 1.06 | 0.82 | 0.92 | 1.02 | 0.78 | 0.91 | 1.04 | 0.79 | 0.92 | 1.07 | |
Lead | 3.40 | 3.83 | 4.31 | 3.29 | 3.84 | 4.25 | 3.36 | 3.79 | 4.34 | 3.27 | 3.81 | 4.42 | |
Selenium | 0.35 | 0.45 | 0.52 | 0.38 | 0.47 | 0.55 | 0.36 | 0.46 | 0.53 | 0.32 | 0.46 | 0.53 | |
Aromatic Solvents | Benzene | 870.78 | 1102.56 | 1283.58 | 823.05 | 1069.07 | 1252.91 | 883.78 | 1091.58 | 1289.37 | 823.50 | 1082.76 | 1313.56 |
Ethyl benzene | 98.16 | 128.00 | 188.42 | 87.25 | 123.49 | 181.64 | 97.35 | 124.72 | 188.50 | 85.25 | 125.73 | 196.10 | |
Styrene | 25.22 | 33.46 | 51.39 | 22.82 | 30.82 | 40.34 | 24.43 | 32.46 | 50.52 | 23.67 | 33.53 | 48.71 | |
Toluene | 1588.52 | 2034.18 | 2501.53 | 1494.39 | 2008.97 | 2439.93 | 1637.27 | 2027.70 | 2536.57 | 1470.03 | 2032.16 | 2553.37 | |
Xylenes | 430.15 | 591.08 | 864.09 | 385.16 | 536.36 | 816.75 | 429.88 | 583.81 | 865.79 | 382.52 | 588.09 | 897.42 | |
Chlorinated Solvents | Methylene chloride | 241.83 | 266.47 | 272.42 | 241.57 | 265.99 | 270.82 | 244.06 | 266.47 | 272.48 | 239.39 | 266.53 | 272.60 |
1,1,1-Trichloroethane | 215.38 | 230.86 | 248.70 | 210.65 | 227.25 | 245.87 | 215.16 | 230.84 | 246.74 | 211.62 | 230.70 | 250.15 | |
Perchloroethylene | 99.77 | 216.12 | 266.51 | 100.31 | 215.36 | 262.03 | 100.08 | 214.81 | 267.36 | 93.71 | 209.17 | 265.98 | |
Trichloroethylene | 70.59 | 74.75 | 82.92 | 70.04 | 73.50 | 81.64 | 70.55 | 74.33 | 82.46 | 70.03 | 74.93 | 84.26 | |
Vinyl chloride | 0.06 | 0.09 | 0.12 | 0.06 | 0.09 | 0.11 | 0.06 | 0.09 | 0.12 | 0.06 | 0.09 | 0.12 | |
Other HAPs | Hydrazine | 0.04 | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 | 0.04 | 0.06 | 0.06 | 0.04 | 0.06 | 0.07 |
PAHs | 8.85 | 12.09 | 15.87 | 8.65 | 11.02 | 14.60 | 8.85 | 12.41 | 15.72 | 8.34 | 12.19 | 15.70 | |
Diesel PM | 291.11 | 427.28 | 660.14 | 255.12 | 399.98 | 589.45 | 296.99 | 411.34 | 614.12 | 253.58 | 417.56 | 666.33 | |
Allyl chloride | <0.01 | <0.01 | <0.01 | <0.01 | <0.01 | <0.01 | <0.01 | <0.01 | <0.01 | <0.01 | <0.01 | <0.01 | |
Carbon disulfide | 1.60 | 2.35 | 3.35 | 1.46 | 2.35 | 2.97 | 1.55 | 2.35 | 3.38 | 1.55 | 2.38 | 3.27 | |
Cresol | 3.38 | 4.11 | 4.56 | 3.33 | 4.02 | 4.49 | 3.44 | 4.11 | 4.52 | 3.30 | 4.08 | 4.58 | |
Cumene | 0.95 | 1.38 | 1.68 | 0.91 | 1.20 | 1.65 | 0.94 | 1.37 | 1.66 | 0.90 | 1.32 | 1.69 | |
Cyanide | 48.02 | 68.14 | 93.24 | 44.19 | 59.91 | 88.38 | 45.72 | 67.14 | 93.11 | 44.92 | 67.32 | 95.47 | |
2,4-Dinitrotoluene | <0.01 | 0.01 | 0.01 | <0.01 | 0.01 | 0.01 | <0.01 | 0.01 | 0.01 | <0.01 | 0.01 | 0.01 | |
Ethylene oxide | 3.48 | 3.98 | 4.64 | 3.37 | 3.96 | 4.54 | 3.48 | 3.94 | 4.57 | 3.40 | 3.97 | 4.77 | |
Hexane | 100.15 | 137.65 | 201.95 | 88.07 | 128.22 | 190.27 | 99.95 | 131.03 | 198.83 | 84.67 | 133.28 | 205.30 | |
Methanol | 197.44 | 273.58 | 408.06 | 183.92 | 253.36 | 348.18 | 191.54 | 272.65 | 396.41 | 189.02 | 277.16 | 403.32 | |