In my last post, I described how I found that frequent, consecutive BD (at least 4 BD times, at least once a day) that avoided ovulation had a shockingly high effectiveness rate for girls (87.5%). While I never thought a timing method could be anywhere close to 90% effective, I did wonder if this might be another good girl timing pattern. Unfortunately, it's not a particularly popular pattern - only 8 charts in my study follow it. Since 8 charts isn't enough to prove much of anything, I've been trying to track down more charts that follow this pattern to see if it really does result in a substantial preference for girls.
I have managed to track down 9 more charts with this pattern, bringing the grand total I have up to 17: 8 charts in the study, 6 charts I saved from the chart gallery that are going to be added to the study, and 3 random charts from Fertility Friend. Unfortunately, adding the new charts has dropped the effectiveness rate of this timing pattern substantially.
Out of the 17 charts, there are 9 girl charts, 7 boy charts, and 1 chart where the gender is so far unknown. This results in an effectiveness rate of 56.25% for girls.
- 4 consecutive BD times: 4 boy charts, 4 girl charts, 1 unknown (50/50)
- 5 consecutive BD times: 1 boy chart, 5 girl charts (sways girl 83.3%)
- 6 consecutive BD times: 2 boy charts, 0 girl charts (sways boy 100%)
(Note: On the above charts, I counted the number of consecutive BD times in total that occurred on the charts - not just on the 5 days prior to ovulation like I did in my main study.)
So this pattern still favors girls, but not by a very strong margin, particularly considering there are only 16 charts with the pattern available. But, despite the small number of charts in the sample and the fact that the effectiveness rate is much smaller now than it was just looking at the charts in my study, I'm still inclined to think that this may be a good timing method. The main reason is that frequent BD that avoids ovulation in general has a 60% effectiveness rate for girls, and I really doubt that consecutive BD would be LESS effective than non-consecutive BD.
I will continue looking for charts with this pattern and will update as more information becomes available.
***UPDATE***
The unknown chart is a girl chart, bringing the grand total to 10 girl charts and 7 boy charts, which results in a 58.8% preference for girls.