Even though frequent BD through ovulation is pretty much 50/50 overall, frequent BD that AVOIDS ovulation does appear to favor girls.
Once again, frequent BD is defined as at least 4 BD times between 5 days prior to ovulation through the day afterward but NO BD on the day of ovulation itself. There were 83 charts with this pattern: 49 girl charts and 34 boy charts, which results in a 59% preference for girls.
- 1 day cut-off: 8 boy charts, and 18 girl charts (sways girl 69.2%)
- 2 day cut-off: 2 boy charts, and 2 girls charts (50/50)
- 1 day cut-off and day after ovulation: 19 boy charts, and 26 girl charts (sways girl 57.8%)
- 2 day cut-off and day after ovulation: 4 boy charts, and 3 girl charts (sways boy 57.1%)
- 3 day cut-off and day after ovulation: 1 boy chart, and 0 girl charts (sways boy 100%)
What is apparent from looking at how the charts break down is that the charts that did not have BD the day after ovulation favored girls to a much stronger extent (10 boy charts and 20 girl charts, favors girls 66.7%) than the charts that had BD the day after ovulation (24 boy charts and 29 girl charts, favors girls 54.7%).
Even though I have been repeating this throughout the blog, I will say it yet again: I do NOT think this means that a cut-off and O+12 favors boys. As I've said previously, the FF charts do not tell when ovulation actually occurred, so it is impossible to tell whether any BD times on them are O+12. I suspect that the reason there are more boy charts that had BD the day after ovulation is because in some cases ovulation occurred late on the day of ovulation and the BD happened early the next day, and so the BD the "day after ovulation" was really in boy timing.
While frequent BD that avoids ovulation favors girls overall, it sways for girls the most if the 4+ days of frequent BD all occur prior to ovulation. In fact, the current effectiveness rate for this pattern (66.7%) is now running higher than the current effectiveness rate for cut-offs (60.6% for 2-3 day cut-offs). Also, the big plus with this pattern is that it should not significantly reduce the odds of getting pregnant.