Complementary Medicine Use Ups Refusal of Usual Cancer Therapy

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Complementary Medicine Use Ups Refusal of Usual Cancer Therapy
Complementary Medicine Use Ups Refusal of Usual Cancer Therapy

FRIDAY, July 20, 2018 (HealthDay News) -- Patients with cancer who receive complementary medicine (CM) are more likely to refuse conventional cancer treatment (CCT), according to a study published online July 19 in JAMA Oncology.

Skyler B. Johnson, M.D., from the Yale School of Medicine in New Haven, Conn., and colleagues conducted a retrospective observational study using data from the National Cancer Database on 1,901,815 patients diagnosed with non-metastatic breast, prostate, lung, or colorectal cancer. Overall survival was compared between patients receiving CCT with or without CM (258 and 1,901,557, respectively).

Following matching, 258 patients in the CM group and 1,032 in the control group were included in analyses. The researchers found that patients who chose CM did not have a longer delay to CCT initiation but did have significantly higher rates of refusal of surgery (7.0 versus 0.1 percent), chemotherapy (34.1 versus 3.2 percent), radiotherapy (53.0 versus 2.3 percent), and hormone therapy (33.7 versus 2.8 percent). Compared with no CM, use of CM correlated with poorer five-year overall survival (82.2 versus 86.6 percent) and was independently linked to elevated risk of mortality (hazard ratio, 2.08), in a multivariate model. Once treatment delay or refusal was included in the model there was no significant correlation seen between CM and survival.

"The results suggest that mortality risk associated with CM was mediated by the refusal of CCT," the authors write.

Several authors disclosed financial ties to the pharmaceutical and medical device industries.

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