Skip to main content

Table 2 The effect of maternal CO exposure on total number of early gestational demise/late gestational death

From: Effects of chronic carbon monoxide exposure on fetal growth and development in mice

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)
  1. EGD: early gestational demise LGD: late gestational death RR: relative risk
  2. CI: confidence interval
  3. 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).
  4. **Equations: EGD (%): Total EGD/(Total Implantation Sites- EGD)*100, LGD (%): Total LGD/[(Total Implantation Sites-(EGD + LGD)]*100