Fong SL, et al. – This study is conducted to determine whether cluster analysis can use to differentiate between normo–ovulatory women with normal ovaries and normo–ovulatory women with polycystic ovarian morphology (PCOM) in a non–subjective manner. The outcome of this study suggests cluster analysis can be utilized to precisely and non–subjectively differentiate between normo–ovulatory women with normal ovaries and normo–ovulatory women with PCOM.