Doctors鈥� unconscious biases favor whites but do not affect high blood pressure treatment for their minority patients, according to a University of Colorado Boulder study, even though a previous study by the same research group found that doctors鈥� biases are reflected in lower ratings by African-American patients.
The new research, led by Irene Blair, an associate professor in 抖阴旅行射-Boulder鈥檚 Department of Psychology and Neuroscience, is published in the Journal of General Internal Medicine.
鈥淲e know that minorities have to face bias and discrimination in many different settings, and this can happen just as easily in health care,鈥� Blair said. 鈥淪o it鈥檚 really good news to find no evidence of bias in hypertension treatment. It helps us figure out best practices for building trust and partnership in medicine.鈥�
The study is part of a larger research project examining physician bias that involves doctors and patients at Kaiser Permanente and Denver Health.
鈥淎s a nonprofit health care organization, Kaiser Permanente is committed to improving the health of our members and the communities we serve,鈥� said John Steiner, M.D., M.P.H., study co-author and senior director of the Kaiser Permanente Institute for Health Research. 鈥淭his research aligns with our mission and is absolutely critical to our body of work focused on understanding and eliminating health care disparities.鈥�
In earlier phases of the study鈥攑ublished in the American Journal of Public Health and the Annals of Family Medicine鈥攖he research team found that about two-thirds of the participating doctors had varying levels of 鈥渋mplicit,鈥� or unconscious, bias against African Americans or Latinos. The result mirrors the biases found generally in the Denver metro area.
The researchers then asked nearly 3,000 patients who were treated regularly for high blood pressure to rate their doctors on interpersonal treatment, communication, trust and contextual knowledge about the patient. The greater a doctor鈥檚 implicit bias in favor of whites over African Americans, the lower the ratings given by the doctor鈥檚 African-American patients. The researchers did not find a similar effect for Latino patients.
鈥淭he results for African-American patients are consistent with other studies that show doctors鈥� implicit biases are not entirely hidden from patients, and more needs to be done to ensure that minority patients feel respected and welcome in health care settings,鈥� Blair said.
In the new, final phase of the study, the researchers looked at pharmacy records of nearly 5,000 patients to see if the doctors鈥� implicit biases were reflected in patterns of prescriptions for their minority patients鈥� high blood pressures. The researchers calculated the proportion of time that a patient鈥檚 current medication was increased or a new medication was started in response to an elevated high blood pressure reading during an office visit.
The results were clear. African American and Latino patients of doctors with 鈥渉igh bias鈥� received exactly the same intensification of treatment in response to high blood pressure鈥攗pping the dose or adding a new medication鈥攁s patients of a doctor with 鈥渓ow bias.鈥�
Similarly, when the research team looked at whether the patients continued to take their medications as prescribed and whether the patients鈥� blood pressures were appropriately controlled across three years, they again found no relation between these outcomes and the doctors鈥� implicit biases.
The researchers suggest that ethnic or racial bias may affect outcomes in other health care settings. For example, biased outcomes are more likely when doctors and patients don鈥檛 have an established relationship, the medical guidelines are ambiguous or decisions must be made under more extreme time pressures.
For both Denver Health and Kaiser Permanente, participation in the study is part of a larger effort to provide the best possible care for all patients regardless of their ethnic or racial background.
鈥淏ecause Denver Health serves such a high proportion of minority patients, we have an intense interest in research aimed at eliminating disparities in health based on race and ethnicity. Although we are reassured that our study found no differences in hypertension treatment caused by unconscious bias, our results point out that the medical community needs to work on improving how we communicate with minority patients,鈥� said Edward Havranek, M.D., study co-author and staff cardiologist at Denver Health.
In addition to conducting research, Kaiser Permanente also addresses health care disparities through quality and service initiatives, including a program focused on educating clinicians about how to deliver culturally appropriate care and an internal group called Equitable Care Health Outcomes, whose work aims to identify promising practices to address disparities within the organization.
Contact:
Irene Blair, 303-492-4563
Irene.Blair@colorado.edu
Laura Snider, 抖阴旅行射-Boulder media relations, 303-735-0528
Laura.Snider@colorado.edu
