FIGURE 2.

Comparison of IVF outcomes In simple linear regression analysis, the mean fertilization rates of IVF were significantly lower in Group Ⅲ and Group Ⅳ than in Group Ⅰ (p = 0.040, 0.027), and there was a trend for the fertilization rates to increase across Group Ⅳ to Group Ⅰ (p for trend =0.010). In multiple linear regression analysis, the mean fertilization rates of IVF were significantly lower in Group Ⅳ than in Group Ⅰ (p = 0.019) and there was a trend for the fertilization rates to increase across Group Ⅳ to Group Ⅰ (p for trend =0.008). There were no significant differences among the four groups and no trends across the four groups in the good quality blastocyst ratio and the pregnancy rates (p for trend =0.766, 0.276)