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. 2006 May 12;23(3):105–110. doi: 10.1007/s10815-005-9007-z

Fig. 1.

Fig. 1.

In the regular menstrual group, the percentage of cycles with postovulatory PI values showing more than 10% decrease during the FSH low-dose step-up cycle was 63.2%, similar to natural cycles. On the other hand, in the oligomenorrheal group the percentage of cycles with postovulatory PI values showing more than 10% decrease during natural cycles was 14.3%, but during ovulation induction cycles with the FSH low-dose step-up regimen this percentage was significantly increased (47.6%; *vs. natural cycle in oligomenorrheal group; p < 0.05). In natural cycles, the percentage of cycles with postovulatory PI values of more than 10% decrease in the oligomenorrheal group was significantly lower than that in the regular menstrual group (** vs. natural cycle in regular menstrual group; p < 0.05).