Assess whether there is a difference between the incidence rate of breast cancer for premenopausal vs. postmenopausal
Question:
Cancer
The data in Table 14.34 provide the relationship between breast-cancer incidence rate and menopausal status by age, based on Nurses Health Study (NHS) data from 1976 to 1990.
Table 14.34 Relationship between breast-cancer incidence rate and menopausal status after controlling for age, NHS, 19761990
aPer 100,000 person-years.
Transcribed Image Text:
Premenopausal Postmenopausal Cases/person-years (incidence rato)" Cases/person-years (incidence rate) Age 35-39 124/131,704 (94) 15/14,795 (101) 40-44 264/179,132 47/43,583 (108) (147) 163/90,965 (179) 45-49 304/151,548 (201) 50-54 159/61,215 (260) 401/184,597 (217) 55-59 25/6133 490/180,458 (272) (408)
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