Standard Days Method Advanced Slide Set Slide 1

Standard Days Method Advanced Slide Set, Slide #1

Efficacy Study of SDM • • Multi-site prospective study Services provided in existing programs Clients were followed monthly for 13 cycles Couples used the method correctly in 97% of cycles • 478 women in the study, 43 got pregnant • With correct use, the failure rate is 4. 8 • With typical use the failure rate is 12. 0 Advanced Slide Set, Slide #2

Standard Days Method is based on… The probability of pregnancy relative to ovulation. Viable sperm – up to 5 days Viable egg – up to 24 hours Advanced Slide Set, Slide #3

Ovulation Pregnancy Rate Probability of Pregnancy from Intercourse on Days Relative to Ovulation Source: Wilcox et al. 1998 Advanced Slide Set, Slide #4

Standard Days Methods is based on… The probability of pregnancy relative to ovulation. Viable sperm – up to 5 days Viable egg – up to 24 hours Timing of ovulation. Menstrual Cycle mid-point ± 3 days Advanced Slide Set, Slide #5

Probability of Ovulation Relative to Midpoint of Cycle 37% 14% 1% 16% 12% 7% 5% [Source: IRH Analysis of WHO 1981 data] 6 Advanced Slide Set, Slide #6

Standard Days Method is based on… The probability of pregnancy relative to ovulation. Viable sperm – up to 5 days Viable egg – up to 24 hours Timing of ovulation. Menstrual Cycle mid-point ± 3 days Advanced Slide Set, Slide #7

Determining the Fertile Window Day 8 Day 19 Advanced Slide Set, Slide #8