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A was study conducted to evaluate the hypothesis that tea consumption and premenstrual syndrome are associated, 188 nursing students and 106 tea factory workers were

A was study conducted to evaluate the hypothesis that tea consumption and premenstrual syndrome are associated, 188 nursing students and 106 tea factory workers were given questionnaires. The prevalence of premenstrual syndrome was 39% among the nursing students and 77% among the tea factory workers. How many nursing students had premenopausal syndrome?

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