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Reduced Mammography Screening for Breast Cancer among Women with Visual Impairment
Annie M Wu1, Alan R Morse2, William H Seiple3
1Department of Ophthalmology and Visual Sciences, University of Michigan Medical School, Ann Arbor, Michigan.
Purpose:
Timely mammography to screen for breast cancer in accordance with the United States Preventive Services Task Force (USPSTF) recommendations can reduce morbidity and mortality substantially. This study assessed whether the odds of undergoing screening mammography are similar for women with and without visual impairment (VI).
Design:
Retrospective, longitudinal cohort study.
Participants:
Women aged 65 to 72 years enrolled in fee-for-service Medicare from January 1, 2008, through December 31, 2015.
Methods:
Patients with no vision loss (NVL), partial vision loss (PVL), and severe vision loss (SVL) were matched 1:1:1 based on age, race, time in Medicare, urbanicity of residence, and overall health. Women with pre-existing breast cancer were excluded. Multivariable conditional logistic regression modeling compared the odds of undergoing screening mammography within a 2-year follow-up period among the 3 groups.
Main Outcomes Measures:
Proportion of participants undergoing mammography and adjusted odds ratios (ORs) of undergoing mammography within 2 years of follow-up.
Results:
A total of 1044 patients were matched (348 in each group). The mean ± standard deviation age at the index date was 69.0 ± 1.5 years for all 3 groups. The proportion of women undergoing 1 mammography screening or more within the 2-year follow-up was 69.0% (n = 240), 56.9% (n = 198), and 56.0% (n = 195) for the NVL, PVL, and SVL groups, respectively (P = 0.0005). The mean ± standard deviation number of mammography screenings undergone per patient during the 5-year period (3-year look-back plus 2-year follow-up) was 3.1 ± 2.0, 2.5 ± 2.0, and 2.3 ± 2.1 for the NVL, PVL, and SVL groups, respectively (P < 0.0001). Women with SVL had 42% decreased odds (OR, 0.58; 95% CI, 0.37-0.90; P = 0.01), and those with PVL had 44% decreased odds (OR, 0.56; CI, 0.36-0.87; P = 0.009) of undergoing mammography during follow-up compared with those with NVL.
Conclusions:
Women with VI were significantly less likely to undergo mammography screening for breast cancer than women without VI. Clinicians should look for ways to help ensure that patients with VI undergo mammography and other preventive screenings as recommended by the USPSTF.
