Journal of obstetrics and gynaecology Canada : JOGC = Journal d'obstétrique et gynécologie du Canada : JOGC
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The aim of this study was to describe the prevalence, clinical effect, characteristics, and underlying risk factors of primary dysmenorrhea (PD) in Canada. ⋯ The majority of Canadian women will suffer from dysmenorrhea at some time during their reproductive years. Available prescription treatments are underused. Young age, smoking, and non-use of OCs are independent risk factors for PD.