https://www.selleckchem.com/pr....oducts/apx-115-free-
STUDY QUESTION What variations underlie the menstrual cycle length and ovulation day of women trying to conceive? SUMMARY ANSWER Big data from a connected ovulation test revealed the extent of variation in menstrual cycle length and ovulation day in women trying to conceive. WHAT IS KNOWN ALREADY Timing intercourse to coincide with the fertile period of a woman maximises the chances of conception. The day of ovulation varies on an inter- and intra-individual level. STUDY DESIGN SIZE DURATION A total of 32 595 women who had pur