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Created January 12, 2022, last updated almost 3 years ago.
Collection: 147, Score: 708, Trend score: 0, Read count: 1294, Articles count: 8, Created: 2022-01-12 05:34:48 UTC. Updated: 2022-01-17 05:09:59 UTC.Notes
File under correlation-is-not-causation-but...
Sometimes even correlations are too significant and important to just be fobbed off by epidemiological cliché. This collection contains articles repeatedly showing association between doctor characteristics, particularly gender, and patient outcome.
Although most recently shown by Wallis in JAMA Surgery (2021), gender-outcome associations are depressingly not new.
- Female patients treated by male surgeons more commonly experience post-operative complications and death than when treated by female surgeons. (Wallis 2021)
- Care from male surgeons and/or anaesthesiologists is associated with longer lengths of stay after cardiac surgery. (Sun 2021)
- Female heart-attack patients are less likely to survive when treated by a male physician than a female physician. (Greenwood 2018)
- Treatment from female surgeons is associated with a lower 30 day mortality than the same from male surgeons. (Wallis 2017)
- In-patient care from a female physician is associated with lower 30 day mortality and readmission rate among elderly patients. (Tsugawa 2017)
The cause of this gender outcome disparity is unclear, and importantly these studies are hypothesis forming, rather than proving. Nonetheless both Wallis (2021) and Greenwood (2018) hint at causes, namely a lack of experience treating female patients for some male doctors, and consequential lesser understanding of gender-disease differences.
The temptation when attempting to understand this is to descend into medical gender essentialism – ironically, probably a contributor to the actual outcome disparities.
A similar doctor-outcome disparity is seen with age. Among physicians, care from older doctors was associated with worse outcomes (Tsugawa 2017), yet for surgeons older age conferred better outcomes (Tsugawa 2018; Satkunasivam 2020). Causes here are possibly a nexus between experience, up-to-date knowledge and work volume – but also, still unclear.
Daniel Jolley
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Collected Articles
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What did they do?
Fascinating big-data study covering 12 years of the 20-most-common surgical procedures in Ontario, Canada. Wallis, Jerath & co. investigated how patient-surgeon sex discordance correlated to a composite for adverse postoperative outcomes. (A deeper investigation of the related Wallis 2017 study).
And they found?
While ~15% of all patients experienced an adverse post-operative outcome, female patients treated by a male surgeon experienced significantly higher odds of a composite of adverse events (OR 1.15 [1.10-1.20]), 30-day complications (OR 1.16 [1.11-1.22]), readmissions (OR 1.11 [1.04-1.19]), and death (OR 1.32 [1.14-1.54]) compared to when treated by female surgeons.
Yet male patients treated by female surgeons experienced either lower odds (death 0.87 [0.78-0.97]) or statistically-similar odds of complications (composite end-point, readmission or post-op complications).
The hot-take
Women once again receive the metaphorical short-end of the medical-stick. Whether societal or elsewhere in the health industry value-chain, long established gender inequity reveals itself in worse surgical outcomes for female patients.
Hang on a sec…
But this cannot just be written off as a consequence of existing social gender inequity, but rather a disquieting causal loop between this as a cause and the result then perpetuating further inequity.
If some part of a surgeon’s ’professional success’ is wrapped-up in the ability to achieve positive outcomes for patients while minimising the adverse, then male surgeons are failing their female patients when compared to either female surgeons, or to the care they provide their male patients.
And yet the same discordance cost is not true for female surgeons.
The take-away
If you are a male surgeon at all interested in successful patient outcomes (surely that’s every surgeon?), then this should make you very, very uncomfortable. At the very least it should make male surgeons stop and consider whether their female colleagues conduct any aspects of their practice differently – particularly when treating female patients.
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Proc. Natl. Acad. Sci. U.S.A. · Aug 2018
Multicenter StudyPatient-physician gender concordance and increased mortality among female heart attack patients.
Very interesting study covering 20 years of Floridian ED patient admissions for myocardial infarct, looking specifically at the influence of gender-discordance between patient and doctor.
The headline finding was that female heart-attack patients experienced lower survival when treated by a male physician than when by a female physician. Baseline mortality across all patients was 11.9%, with a 1.5% absolute survival decrease when compared to male patients treated by female physicians.
Although on the surface this absolute effect size could be misinterpreted as small, it represents a 12% relative risk difference – quite meaningful when we are considering mortality from the leading cause of death in the U.S.
Could the researchers suggest a reason?
The authors identified two interesting points:
- Female patients treated in EDs with a higher percentage or a higher number of female physicians were more likely to survive. Although true of both care from a female or male physician, the beneficial survival effect of a greater female physician presence, was more marked when treated by a male doctor.
- Female patients treated by male physicians were also more likely to survive when the male physician had previously seen more female patients (0.02% increased survival for each female patient seen in the last quarter!).
summary"These results suggest a reason why gender inequality in heart attack mortality persists: Most physicians are male, and male physicians appear to have trouble treating female patients." – Greenwood, 2018
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Care from male surgeons and/or anaesthesiologists is associated with longer lengths of stay after cardiac surgery.
pearl -
Multicenter Study
Relation between surgeon age and postoperative outcomes: a population-based cohort study.
Increasing surgeon age is almost linearly associated with decreases in patient death, readmission & post-operative complications.
pearl -
Observational Study
Physician age and outcomes in elderly patients in hospital in the US: observational study.
Patients treated by older physicians experience higher 30-day mortality than with younger physicians.
pearl -
Observational Study
Age and sex of surgeons and mortality of older surgical patients: observational study.
Patient post-operative mortality was lowest for those treated by older surgeons.
pearl -
Comparative Study
Comparison of postoperative outcomes among patients treated by male and female surgeons: a population based matched cohort study.
Treatment from female surgeons is associated with a lower 30 day mortality than the same from male surgeons.
pearl -
JAMA internal medicine · Feb 2017
Comparative StudyComparison of Hospital Mortality and Readmission Rates for Medicare Patients Treated by Male vs Female Physicians.
In-patient care from a female physician is associated with lower 30 day mortality and readmission rate among elderly patients.
pearl