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A Multicenter Case Control Study Of Association Of Vitamin D With Breast Cancer Among Women In Karachi, Pakistan, Uzma Shamsi, Shaista Khan, Syed Iqbal Azam, Aysha Habib, Amir Maqbool, Mohammad Hanif, Tiffany Gill, Romaina Iqbal, David Callen
A Multicenter Case Control Study Of Association Of Vitamin D With Breast Cancer Among Women In Karachi, Pakistan, Uzma Shamsi, Shaista Khan, Syed Iqbal Azam, Aysha Habib, Amir Maqbool, Mohammad Hanif, Tiffany Gill, Romaina Iqbal, David Callen
Community Health Sciences
Background: The prevalence of vitamin D inadequacy and breast cancer are both high among women living in Karachi, Pakistan.
Methods: A matched case control study was conducted in two hospitals of Karachi, Pakistan to evaluate the association of vitamin D (serum 25-hydroxyvitamin D) concentrations, vitamin D supplementation and sun exposure with breast cancer among Pakistani women. A total of 411 newly diagnosed histologically confirmed primary breast cancer cases were enrolled and 784 controls, free of breast and any other cancers, were matched by age (year of birth ± 5 years), residence in the same geographic area and study site. Information …