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Cancer Causes Control. 2010 Nov;21(11):1931-40. doi: 10.1007/s10552-010-9621-7. Epub 2010 Jul 31.

Peer navigation improves diagnostic follow-up after breast cancer screening among Korean American women: results of a randomized trial.

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School of Public Health, University of California, Los Angeles and Jonsson Comprehensive Cancer Center, University of California, 650 Charles Young Drive South, A2-125 CHS, Box 956900, Los Angeles, CA 90095-6900, USA.



To test an intervention to increase adherence to diagnostic follow-up tests among Asian American women.


Korean American women who were referred for a diagnostic follow-up test (mainly diagnostic mammograms) and who had missed their follow-up appointment were eligible to participate in the study. Women from two clinics (n = 176) were randomly allocated to a usual care control arm or a peer navigator intervention arm. A 20-min telephone survey was administered to women in both study arms six months after they were identified to assess demographic and socio-economic characteristics and the primary outcome, self-reported completion of the recommended follow-up exam.


Among women who completed the survey at six-month follow-up, self-reported completion of follow-up procedures was 97% in the intervention arm and 67% in the control arm (p < 0.001). Based on an intent-to-treat analysis of all women who were randomized and an assumption of no completion of follow-up exam for women with missing outcome data, self-reported completion of follow-up was 61% in the intervention arm and 46% in the usual care control arm (p < 0.069).


Our results suggest that a peer navigator intervention to assist Korean American women to obtain follow-up diagnostic tests after an abnormal breast cancer screening test is efficacious.

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