Survey Results: Timing Analysis

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CHART KEY

The colored bar shows the percentage of boys compared to girls for each response. However, if there are only a few responses for a question, the percentage can be misleading, so take note of the color-coding of the bar.

	100+ Responses: There are at least 100 responses to the question, so the results are probably worth paying attention to!
	10+ Responses: The lighter-colored bar shows there are between 10 and 100 responses. The results may or may not be useful.
	1+ Responses: The pale bar shows there are fewer than 10 responses, so you should probably ignore this one.

Ovulation Determined by Mother's Best Estimate

Boys	Girls	Cutoff	Results as Percentage	Odds?	%Boys vs. %Girls
6	5	-5	1.0 1.4	GIRL 58%
26	22	-4	4.5 6.4	GIRL 58%
36	37	-3	6.3 10.7	GIRL 63%
80	51	-2	13.9 14.8	GIRL 51%
129	73	-1	22.5 21.2	BOY 52%
267	115	0	46.5 33.3	BOY 58%
30	42	1	5.2 12.2	GIRL 70%
574	345	Total = 919 babies

Ovulation Determined by BBT (Basal Body Temperature) Method

Boys	Girls	Cutoff	Results as Percentage	Odds?	%Boys vs. %Girls
7	3	-5	2.9 1.9	BOY 60%
15	14	-4	6.1 9.1	GIRL 60%
21	19	-3	8.6 12.3	GIRL 59%
32	26	-2	13.1 16.9	GIRL 56%
50	33	-1	20.5 21.4	GIRL 51%
90	42	0	36.9 27.3	BOY 57%
29	17	1	11.9 11.0	BOY 52%
244	154	Total = 398 babies

Ovulation Determined by Cervical Fluid

Boys	Girls	Cutoff	Results as Percentage	Odds?	%Boys vs. %Girls
2	0	-5	1.9 0.0	BOY 100%
1	1	-4	0.9 1.2	GIRL 57%
4	2	-3	3.7 2.4	BOY 61%
6	4	-2	5.6 4.9	BOY 53%
20	15	-1	18.7 18.3	BOY 51%
40	23	0	37.4 28.0	BOY 57%
34	37	1	31.8 45.1	GIRL 59%
107	82	Total = 189 babies

Ovulation Determined by Cervical Changes

Boys	Girls	Cutoff	Results as Percentage	Odds?	%Boys vs. %Girls
1	1	-4	2.0 2.0	GIRL 51%
1	2	-3	2.0 4.1	GIRL 67%
5	8	-2	10.0 16.3	GIRL 62%
11	6	-1	22.0 12.2	BOY 64%
15	18	0	30.0 36.7	GIRL 55%
17	14	1	34.0 28.6	BOY 54%
50	49	Total = 99 babies

Ovulation Determined by LH Surge

Boys	Girls	Cutoff	Results as Percentage	Odds?	%Boys vs. %Girls
3	2	-5	1.9 1.5	BOY 56%
4	1	-4	2.5 0.8	BOY 77%
12	16	-3	7.6 12.0	GIRL 61%
22	17	-2	14.0 12.8	BOY 52%
30	35	-1	19.1 26.3	GIRL 58%
55	34	0	35.0 25.6	BOY 58%
31	28	1	19.7 21.1	GIRL 52%
157	133	Total = 290 babies

Ovulation Determined by "O Pain"

Boys	Girls	Cutoff	Results as Percentage	Odds?	%Boys vs. %Girls
2	1	-5	1.3 0.8	BOY 61%
7	10	-4	4.5 8.4	GIRL 65%
14	16	-3	9.0 13.4	GIRL 60%
22	21	-2	14.2 17.6	GIRL 55%
34	26	-1	21.9 21.8	BOY 50%
59	30	0	38.1 25.2	BOY 60%
17	15	1	11.0 12.6	GIRL 53%
155	119	Total = 274 babies

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