As shown in Table2, on average, only 75 IU/day of Gn were used in minimal stimulation IVF according to our stimulation protocol and 280. 67 IU/day of Gn were used in conventional stimulation protocol, which was significantly different. The average oocytes retrieved in MS-IVF was 1.39 which was less than 2.26 oocytes in conventional IVF(p<0.05), the average available embryo was 1.51 in conventional stimulation and 0.90 in MS-IVF(p<0.05), the good quality embryo was 1.01 in conventional stimulation and 0.63 in MS-IVF(p<0.05). Even though there were statistical differences in average oocytes, the average embryos available and the good quality embryos obtained between C-IVF and MS-IVF, though slightly higher, there were no statistical differences in clinical pregnancy rate (18.99% in C-IVF vs 16.93% in MS-IVF, p>0.05) in the first fresh transfer cycle. There were also significant differences in the gonadotrophin stimulation days between groups, the time interval between initiation of stimulation and trigger day was significantly shorter in MS-IVF.
Table2. Clinical outcomes of Conventional and minimal stimulation IVF