Key result
High-risk patients undergoing CABG were preferentially shunted to certain surgeons (p < 0.05), indicating that unmeasured selection bias influences surgeon-specific mortality profiles.
Why the study?
Does selection bias in matching patients with surgeons influence risk-adjusted mortality profiles in CABG?
Observational (n=2,298)
No
Does selection bias in matching patients with surgeons influence risk-adjusted mortality profiles in CABG?
p-value: p=< 0.05
Surgeon-specific mortality profiles may be confounded by unmeasured selection bias, as high-risk patients are preferentially directed to certain surgeons.
May confound surgeon-specific CABG mortality reporting; leaves open whether current risk adjustment fully mitigates selection bias.
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Ferraris et al. (2011) conducted an observational in Coronary artery bypass grafting (CABG) (n=2,298). Surgeon assignment vs. Other surgeons was evaluated on Number of high-risk patients operated upon by each surgeon (p=< 0.05). High-risk patients undergoing CABG were preferentially shunted to certain surgeons (p < 0.05), indicating that unmeasured selection bias influences surgeon-specific mortality profiles.
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