There are 40 new cases of carcinoma of breast per 100,000 women/ year in country ‘X’ & 100 new cases / 100,000 women/ year in Country ‘Y’. Based on this statistical data which of the following statement is true?
Correct Answer: Country 'X' has more number of younger women than country 'Y'
Description: Age is the most impoant risk factor for breast cancer Breast cancer is uncommon below age of 35, its incidence is increasing rapidly b/w ages of 35 to 50. A slight bimodal trend in the age distribution has been observed with a dip in incidence at the time of menopause. A secondary rise in frequency often occurs after the age of 65. Women who developed their first breast cancer under the age of 40, had three times the risk of developing a second breast cancer than those who developed their first cancer after the age of 40 Indeed the etiologies of pre-menopausal & post-menopausal breast cancer appears to be different. Other Risk factors of breast cancer: Family history of breast cancer Delayed first pregnancy Early menarche and late menopause Elevated estrogen & progesterone levels Prior breast biopsy Higher socio-economic status Radiation exposure etc.
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Social & Preventive Medicine
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