Pregnancy rate

It is the percentage of all attempts that leads to pregnancy, with attempts generally referring to menstrual cycles where insemination or any artificial equivalent is used, which may be simple artificial insemination (AI) or AI with additional in vitro fertilization (IVF).

For instance, in 2007, Canadian clinics reported a live birth rate of 27% with in vitro fertilisation.

Menarche, the first menstrual period, usually occurs around 12–13, although it may happen earlier or later, depending on each girl.

A 2001 review suggested a paternal age effect on fertility, where older men have decreased pregnancy rates.

There are many fertility testing methods, including urine test kits that detect the LH surge that occurs 24 to 36 hours before ovulation; these are known as ovulation predictor kits (OPKs).

[11] Computerized devices that interpret basal body temperatures, urinary test results, or changes in saliva are called fertility monitors.

[17] With enhanced technology, the pregnancy rates are substantially higher today[when?]

Age and female fertility : Cumulative percentage and average age for women reaching subfertility , sterility , irregular menstruation and menopause . [ 6 ] [ needs update ]
Chance of fertilization by menstrual cycle day relative to ovulation. [ 8 ]
Pregnancy rates in ovulation induction , as functions of the size of the leading follicle as measured by transvaginal ultrasonography at days 11 - 13 (bottom scale), as well as the thickness of the endometrial lining (4 different curves). [ 9 ]