The impact of social vulnerability subthemes on postoperative outcomes differs by racial/ethnic minority status.

INTRODUCTION

Social vulnerability is an important driver of disparate surgical outcomes, however the extent to which certain types of vulnerability impact outcomes is poorly understood.

METHODS

Medicare beneficiaries 65 years or older who underwent one of four operations were identified. Multivariable mixed-effects logistic regression was used to measure the association of four social vulnerability subthemes from the social vulnerability index (SVI) were assessed relative to the likelihood to achieve a textbook outcome (TO).

RESULTS

Among 579,846 Medicare beneficiaries, median age was 74 years and most patients (536,455,92.5%) were White/non-Hispanic. On multivariable analysis, the overall impact of the composite SVI metric on the odds to achieve a postoperative TO was lower among White/non-Hispanic patients (Δ25%ile SVI:OR:0.98,95%CI:0.97-0.98) compared with ethnic/minority patients (Δ25%ile SVI:OR:0.93,95%CI:0.91-0.94). Increasing vulnerability in the subthemes of socioeconomic status (Δ25%ile SVI:ethnic/minority:OR:0.92, 95%CI:0.91-0.94) and household composition (Δ25%ile SVI:ethnic/minority:OR:0.92,95%CI:0.91-0.94) was associated with a greater likelihood not to achieve a TO among minority patients.

CONCLUSIONS

Worsening SES and household compositions & disability had a detrimental effect on odds of TO following surgery with the most pronounced effect on non-White minority patients.