Fig 1.
2PN on Day 1, 4-cell embryo on Day 2, 8-cell embryo on Day 3. PN = pronucleus.
Table 1.
Cycle distribution in the different age groups.
Table 2.
Number of viable embryos in different age groups.
Table 3.
Number of high-quality embryos in different age groups.
Fig 2.
Fertilization rates in different age groups.
In each group (maternal age <30 y, 30–34 y, 35–38 y), there were no significant differences in fertilization rate among different paternal age subgroups (P>0.05).
Fig 3.
Miscarriage rates in different age groups.
In each group (maternal age <30 y, 30–34 y, 35–38 y), there were no significant differences in miscarriage rate among different paternal age subgroups (P>0.05).
Fig 4.
Implantation rates in different age groups.
There were no significant differences in implantation rate among the different paternal age groups when the maternal age was <30 y and 35–38 (P >0.05). In the 30–34 y maternal age group, the implantation rates decreased with increased paternal age (P <0.05).
Fig 5.
Pregnancy rates in different age groups.
There were no significant differences in pregnancy rate among the different paternal age groups when the maternal age was <30 y and 35–38 (P >0.05). In the 30–34 y maternal age group, the pregnancy rates significantly decreased with increasing paternal age (P <0.05).