From: Use of fertility awareness methods as a component of safer conception for women in HIV-serodifferent relationships in Kenya
Pregnancies/menstrual cycles
Pregnancy incidence (per year)
Peak fertility
Aligned
1/24
0.5
Not aligned
17/132
1.55
Partially aligned
13/96
1.62
Widened peak fertility (± 2 days)
4/49
0.98
13/105
1.49
15/98
1.84