Table 2. Estimated cycle day of conception relative to the start of the last bleeding episode among 778 women presenting for abortion by use of cyclic hormonal contraceptives versus other methods.

Cycle day of conception	Cyclic hormonal contraception	All other methods of contraception	p-value
1-9	26 (26.3%)	100 (14.7%)	0.005
10-40	73 (73.7%)	579 (85.3%)
Total	99 (100%)	679 (100%)