Moreover, these data entry errors would be hard to detect: Only 0.06% of the errors were blank or outside of the allowable range for the variables. Thus, researchers cannot rely upon histograms and frequency tables to detect data entry errors.
Answer Wiki. Isotretinoin does not cause infertility; what it does cause is devastating birth defects if a woman becomes pregnant while using it. For a female: you have to use totally reliable birth control-that would be the IUD or the implant-to be certain you do not conceive.
Ovulation problems are often caused by polycystic ovarian syndrome (PCOS). PCOS is a hormone imbalance problem which can interfere with normal ovulation. PCOS is the most common cause of female infertility. Primary ovarian insufficiency (POI) is another cause of ovulation problems. POI occurs when a woman's ovaries stop working normally before she is 40.