The Impact of Unconscious Biases on Healthcare Outcomes · The Impact of Unconscious Biases on...

Center for Surgical Trials and Outcomes Research

The Impact of Unconscious Biases on Healthcare Outcomes

Adil H Haider MD, MPH, FACS Associate Professor of Surgery, Anesthesiology and Health Policy and Management Director, Center for Surgery Trials and Outcomes Research (CSTOR)

Financial Disclosures

Sources of Funding: National Institutes of Health/ NIGMS K23GM093112-01 American College of Surgeons C. James Carrico

Fellowship for the study of Trauma and Critical Care Johns Hopkins Dean’s Research Fellowship for

Medical Students

Disparities in Surgical Outcomes are Well Documented in the Literature

•African American children experience worse Clinical and Functional Outcomes after Traumatic Brain Injury: An Analysis of the National Pediatric Trauma Registry. J Trauma, May 2007

•Race and Insurance as Risk Factors for Trauma Mortality. Arch Surg, 2008

•Racial Disparities in Motorcycle-Related Mortality: An Analysis of The National Trauma Data Bank. Am J Surg, Aug 2010

•Pedestrians Struck By Motor Vehicles Contribute To Disparities In Trauma Outcomes: The Case For Inner City Pedestrian Injury Prevention Programs Surgery, Aug 2010

Potential Mechanisms that lead to Disparities

• Poor Access to Medical Care • Sub Standard Medical Care If so ? What are the exact differences

in care; are they in treatments, major procedures, complications?

• Differential treatments What is the role of the provider bias?

Are Surgical Care Providers Biased?

Would we treat this patient differently?

There is no data to suggest that any of us would do so knowingly

Hypothesis

Like the general population doctors may posses unconscious biases or preferences

These Unconscious or Implicit Biases may lead us to unknowingly treat patients differently

Race Implicit Association Test Computer-based test of social cognition Measures time it takes to match representatives of social groups with good and bad attributes Test-takers with an implicit preference for whites complete the tasks in screens a and b more quickly than those in screens c and d

https://implicit.harvard.edu/implicit

Race IAT: Implicit preference for whites: Response to these pairings is faster…

& African

American bad

tragedy

European American & good

gentle

warmth

pleasure

paradise

rainbow

If faster on these… preference for Blacks

tragedy

European American

African American & good

gentle

warmth

pleasure

paradise

rainbow

IAT extensively evaluated

Race IAT Results from General Population (> 1 million responders)

27% 27%

16% 17% 6% 4% 2%

Strong preference for White people Moderate preference for White people Slight preference for White people

Little to no automatic preference

Slight preference for Black people

Moderate preference for Black people Strong preference for Black people

Physicians Have Unconscious Preferences as Well

Results

Do Implicit Preferences Impact Clinical Decision Making?

Conclusion: Implicit Bias Predicts Thrombolysis

Implicit Bias among Physicians and its Prediction of Thrombolysis Decisions for Black and White Patients – Green et al JGIM 2007

n=220 IM and Emed Residents

How is this moderated ? Is it Lack of Understanding and Empathy ?

• Cultural Differences? – Difficulty in contextualizing – Language barriers

• Intra-group Preferential Treatment

– We may do more “favors” for patients who we can more closely relate to

Clinician Bias and Patient Perceptions of Clinician Respect

Patient race

Clinician Bias and Patient Liking of Clinician

Patient race

Clinician Bias and Patient Recommendation of Clinician

Patient race

Paradox of Cognitive Dissonance

• Humans: 2 cognitive systems – 1st: Conscious, controlled & effortful

processing of stimuli which produces explicit beliefs & attitudes.

– 2nd: Responds automatically through implicit knowledge, beliefs, attitudes & skills through repeated exposure

One Needs Conscious Mental Processing to overcome Bias • “Implicit attitudes are more likely to

influence behaviors when cognitive processing capacity is low: – due to fatigue or illness – under pressure or cognitive overload

• It takes “cognitive luxury” to override implicit biases and replace them with controlled consideration of patients’ unique characteristics.”

Methods : A Two Year Prospective Study Medical students entering JHSOM

Classes of 2013 and 2014 were asked to complete a web survey including:

1) IAT: Race Social Class 2) Eight clinical scenario vignettes 3) Direct questions regarding explicit race

and socioeconomic class preferences

Clinical vignettes randomly changed race and socioeconomic classes

White compared to Black

To compare Class Status : Occupation used for example Lawyer compared to Toll Booth collector

Race Implicit Association Test Scores for Black vs. White

2.0% 6.1% 5.6%

17.8% 15.2%

Strong Moderate Slight BothEqually

Slight Moderate Strong

Prefers White Prefers Black

Explicit vs. Implicit Race Preferences

ExplicitImplicit

ρ=-0.08

Prefers Black Prefers White

Responses to Clinical Vignettes by Patient Race

Haider, A. H. et al. JAMA 2011;306:942-951

Copyright restrictions may apply.

Lower vs. Upper Social Class Implicit Association Test Scores

0.0% 1.6% 2.1% 10.4% 9.9%

Prefers Lower Prefers Upper

Explicit and Implicit Preferences Lower vs. Upper Class

ExplicitImplicit

ρ= -0.43

Prefers Lower Prefers Upper

Responses to Clinical Vignettes by Patient Social Class

Haider, A. H. et al. JAMA 2011;306:942-951

Copyright restrictions may apply.

Conclusion

A majority of medical students exhibit an unconscious bias preferring Whites and Upper Social class

Unlike data on physicians, these biases

do not impact their assessment of surgical patients

Is it Useful to Know about ones biases?

Are Inter-Ethnic Friendships a good thing?

• Overwhelming majority of participants

demonstrated no Explicit Preferences • However: those with Interethnic

Friendships had decreased levels of Implicit Bias towards friend’s group

Conclusion: Exposure decreases Implicit Preference differences and improves understanding

Emergency Surgery: A Young / Inexperienced Surgeons Game?

• Until 2004 “Super Chiefs” took almost all emergent general surgery call @ JHH

• Acute Care Surgery (ACS) paradigm now helps ensure that patients receives a qualified and committed surgeon

• Now Halsted ACS service is staffed 24x7 by double board certified surgeons

What I Believe:

A Combination of –Systemic Changes –Societal Changes –Health Care Work Force Changes Will lead to the eradication of

disparities

Thank You - Mentors, Co-investigators & Students

Dr Edward Cornwell III Dr Ellen MacKenzie Dr Lisa Cooper Dr Peter Pronovost Dr Neil Powe Dr David Efron Dr Elliott Haut Dr Wendy Greene Dr SM Sriram Dr Eric Schneider

Dr Tolulope Oyetunji Dr Sharon Onguti Dr Joseph Crompton Dr Nabeel Zafar Dr Cassandra Villegas Dr Mehreen Kisat Dr Augustine Obirieze Ms Sandra Swoboda, RN Professor Susan Baker

The Impact of Unconscious Biases on Healthcare Outcomes · The Impact of Unconscious Biases on...

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