Survey Results: Timing Analysis

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	2	-5	1.8 1.0	BOY 65%
14	17	-4	4.2 8.2	GIRL 66%
26	26	-3	7.9 12.5	GIRL 61%
50	23	-2	15.1 11.1	BOY 58%
74	44	-1	22.4 21.2	BOY 51%
150	73	0	45.3 35.1	BOY 56%
11	23	1	3.3 11.1	GIRL 77%
331	208	Total = 539 babies

Ovulation Determined by BBT (Basal Body Temperature) Method

Boys	Girls	Cutoff	Results as Percentage	Odds?	%Boys vs. %Girls
4	3	-5	2.6 2.7	GIRL 51%
13	12	-4	8.4 10.7	GIRL 56%
16	18	-3	10.3 16.1	GIRL 61%
23	17	-2	14.8 15.2	GIRL 51%
35	21	-1	22.6 18.8	BOY 55%
50	26	0	32.3 23.2	BOY 58%
14	15	1	9.0 13.4	GIRL 60%
155	112	Total = 267 babies

Ovulation Determined by Cervical Fluid

Boys	Girls	Cutoff	Results as Percentage	Odds?	%Boys vs. %Girls
2	0	-5	2.5 0.0	BOY 100%
0	1	-4	0.0 1.6	GIRL 100%
3	2	-3	3.7 3.2	BOY 53%
5	4	-2	6.2 6.5	GIRL 51%
16	12	-1	19.8 19.4	BOY 51%
30	16	0	37.0 25.8	BOY 59%
25	27	1	30.9 43.5	GIRL 59%
81	62	Total = 143 babies

Ovulation Determined by Cervical Changes

Boys	Girls	Cutoff	Results as Percentage	Odds?	%Boys vs. %Girls
1	1	-4	2.7 2.5	BOY 52%
0	2	-3	0.0 5.0	GIRL 100%
5	5	-2	13.5 12.5	BOY 52%
9	6	-1	24.3 15.0	BOY 62%
13	15	0	35.1 37.5	GIRL 52%
9	11	1	24.3 27.5	GIRL 53%
37	40	Total = 77 babies

Ovulation Determined by LH Surge

Boys	Girls	Cutoff	Results as Percentage	Odds?	%Boys vs. %Girls
3	2	-5	2.7 2.0	BOY 57%
4	0	-4	3.6 0.0	BOY 100%
11	14	-3	9.9 14.1	GIRL 59%
16	11	-2	14.4 11.1	BOY 56%
19	24	-1	17.1 24.2	GIRL 59%
34	26	0	30.6 26.3	BOY 54%
24	22	1	21.6 22.2	GIRL 51%
111	99	Total = 210 babies

Ovulation Determined by "O Pain"

Boys	Girls	Cutoff	Results as Percentage	Odds?	%Boys vs. %Girls
2	1	-5	1.9 1.1	BOY 62%
6	8	-4	5.6 8.9	GIRL 62%
11	13	-3	10.2 14.4	GIRL 59%
17	14	-2	15.7 15.6	BOY 50%
23	19	-1	21.3 21.1	BOY 50%
40	25	0	37.0 27.8	BOY 57%
9	10	1	8.3 11.1	GIRL 57%
108	90	Total = 198 babies

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