Table 2.
CO (ppm) | Total Implantation sites/litter | Total live fetuses/litter | **EGD (%) | RR of EGD (CI) | **LGD (%) | RR of LGD (CI) |
---|---|---|---|---|---|---|
0 | 12.8 | 12.6 | 1.12 | 0.56 | ||
25 | 12.2 | 11.9 | 2.40 | 2.15 (0.42, 10.95) | 0.48 | 0.86 (0.05, 13.66) |
60 | 12.8 | 12.4 | 1.81 | 1.62 (0.27, 0.96) | 1.20 | 2.16 (0.20, 23.56) |
100 | 14.2 | 13.9 | 0.78 | 0.70 (0.06, 7.63) | 1.56 | 1.40 (0.09, 22.15) |
150 | 13.6 | 13.5 | 0.92 | 0.82 (0.08, 8.95) | 0.00 | 0.00 |
200 | 10.9 | 10.5 | 1.15 | 1.03 (0.09, 11.19) | 2.30 | 1.74 (0.38, 44.76) |
250 | 12.9 | 12.4 | 2.91 | 2.67 (0.44, 15.34) | 0.90 | 1.74 (0.11, 27.49) |
330 | 13.9 | 12.1 | 8.80* | 7.88 (1.78, 34.92) | 4.00 | 7.16 (0.85, 60.54) |
400 | 13.7 | 8.2* | 13.40* | 12.01 (2.72, 52.94) | 26.83* | 48.02 (6.59, 350.20) |
EGD: early gestational demise LGD: late gestational death RR: relative risk
CI: confidence interval
Statistical Analysis: Chi squared test, using the fisher exact method to compare EGD or LGD to total implantation sites - EGD or LGD and analysis of variance for live fetuses/litter (*p < 0.05).
**Equations: EGD (%): Total EGD/(Total Implantation Sites- EGD)*100, LGD (%): Total LGD/[(Total Implantation Sites-(EGD + LGD)]*100