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Bra Usage Duration and Breast Cancer Risk: A Case-Control Study
Introduction: Breast cancer is a disease feared by most women, with 2.3
million women worldwide being diagnosed with this disease. In 2024,
Indonesia will relocate its capital to East Kalimantan Province, which
currently has the second-highest (1%) prevalence of breast cancer cases
in Indonesia. Purpose: Given the increasing prevalence of breast cancer,
it is worthwhile to scientifically examine the relationship between the
duration of bra usage, age at first bra usage, bra size suitability, and types
of bras used in relation to the occurrence of breast cancer. Method: The
study design used was a case-control study with a 1:1 ratio of 48
respondents (24 cases and 24 controls) selected through purposive
sampling. The analysis employed chi-square and odds ratio tests. Results:
The study revealed that the average age of the respondents was 45.25
years. Furthermore, the variables of bra usage duration (OR=2.333), age
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