title: False risk attribution results in misleading assessment of the relationship between suppression of ovulation and the effectiveness of the Yuzpe regimen for emergency contraception.
authors.forename: Rafael T
authors.initials: RT
authors.lastname: Mikolajczyk
authors.forename: Joseph B
authors.initials: JB
authors.lastname: Stanford
mesh_terms: D003281:Contraceptives, Postcoital / Q000008:administration & dosage*; D003627:Data Interpretation, Statistical; D004997:Ethinyl Estradiol / Q000008:administration & dosage*; D005188:False Negative Reactions; D005260:Female; D005640:Follicle Stimulating Hormone / Q000097:blood; D005498:Follicular Phase; D006801:Humans; D016912:Levonorgestrel / Q000008:administration & dosage*; D007986:Luteinizing Hormone / Q000097:blood; D006080:Ovarian Follicle / Q000187:drug effects; D010053:Ovary / Q000187:drug effects* / Q000502:physiology; D010060:Ovulation; D012307:Risk Factors
chemical_list: D003281:Contraceptives, Postcoital; D004997:Ethinyl Estradiol; D016912:Levonorgestrel; D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone