After adding another 200 charts, frequent BD continues to be a 50/50 timing pattern - however, it does sway for either boys or girls depending on whether the frequent BD includes the day of ovulation.
Overall the amount of BD on boy and girl charts is very similar. There were 1220 BD times on the 350 boy charts (average of 3.49 BD times on the boy charts). There were 1253 BD times on the 350 girl charts (average of 3.58 BD times on the girl charts).
Since there is no set definition for frequent BD, I chose to define it as at least 4 BD times during the five days prior to ovulation through the day afterwards. 321 charts out of the 700 I looked at followed this pattern, 159 girl charts and 162 boy charts (162/321, sways boy 50.5%).
Frequent BD charts:
- 4 BD times: 74 boy charts, 69 girl charts (sways boy 51.7%)
- 5 BD times: 51 boy charts, 47 girl charts (sways boy 52%)
- 6 BD times: 23 boy charts, 28 girl charts (sways girl 54.9%)
- 7+ BD times: 14 boy charts, 15 girl charts (sways girl 51.7%)
Even though the numbers for frequent BD through ovulation are pretty close to 50/50 for boys and girls, there is one significant detail that makes a difference in how the BD sways: whether there is BD on the day of ovulation. 205 charts with frequent BD had BD on the day of ovulation, 111 boy charts and 94 girl charts, resulting in a 54.1% preference for boys.
If the day of ovulation is avoided in frequent BD, though, the preference is for girls. 83 charts followed this pattern, 34 boy charts and 49 girl charts, resulting in a 59% preference for girls.
Previously, I said that I didn't think frequent BD through O was the worst swaying method for a girl (and technically it still isn't - there are definitely worse timing methods to use, lol!). However, after looking over the statistics again, I do think frequent BD through ovulation is a worse timing method than I used to think. Before I simply thought that it was 50/50, and that it was better to go with a timing method that actually sways, since there are timing patterns that DO produce more girls and that don't significantly decrease the chance of pregnancy. But in fact, if the frequent BD includes the day of ovulation it is NOT 50/50; it actually sways 54.1% for boys. Obviously, this is not a huge preference for boys, and it is only about 3% more than chance. But it does result in more boys.
It does surprise me that frequent BD that includes the day of ovulation is not just 50/50. BD on ovulation in general is running close to 50/50 and one would think that, since frequent BD lowers sperm count, frequent BD at the very least should have the same odds as BD on ovulation in general. I have no theories at this time to explain why frequent BD through ovulation would result in MORE boys that nonfrequent BD through ovulation. If I come up with some explanation, I will update.