Social Vulnerability Subtheme Analysis Improves Perioperative Risk Stratification in Hepatopancreatic Surgery.

There has been increased interest in understanding how social determinants of health (SDH) may affect care both in the medical and surgical setting. We sought to define the impact of various aspects of social vulnerability on the ability of patients to achieve a "textbook outcome" (TO) following hepatopancreatic surgery. Medicare beneficiaries who underwent hepatopancreatic resection between 2013 and 2017 were identified using the Medicare database. Social vulnerability was defined using the Centers for Disease Control Social Vulnerability Index (SVI), which is comprised of four subthemes: socioeconomic (SE), household composition and disability (HCD), minority status and language (MSL), and housing type and transportation (HTT). TO was defined as the composite endpoint: absence of 90-day mortality or readmission, absence of an extended length of stay (LOS), and no complications during the index admission. Cluster analysis was used to identify vulnerability cohorts, and multivariable logistic regression was utilized to assess the impact of these SVI subthemes on the likelihood to achieve a textbook outcome. Among 37,707 Medicare beneficiaries, 64.9% (n = 24,462) of patients underwent pancreatic resection while 35.1% (n = 13,245) underwent hepatic resection. Median patient age was 72 years (IQR: 68-77), just over one-half were male (51.9%; n = 19,558), and the median CCI was 3 (IQR: 2-8). Cluster analysis revealed five distinct SVI profiles with wide variability in the distribution of SVI subthemes, ranging from 15 (profile 1 IQR: 7-26) to 83 (profile 5 IQR: 66-93). The five profiles were grouped into 3 categories based on median composite SVI: "low vulnerability" (profile 1), "average vulnerability" (profiles 2 and 3), or "high vulnerability" (profiles 4 and 5). The rate of TO ranged from 44.6% in profile 5 (n = 4022) to 49.2% in profile 1 (n = 4836). Multivariable analyses comparing patients categorized into the two average SVI profiles revealed that despite having similar composite SVI scores, the risk of adverse postoperative outcomes was not similar. Specifically, patients from profile 5 had lower odds of achieving a TO (OR 0.89, 95%CI: 0.83-0.95) and higher odds of 90-day mortality (OR 1.29, 95%CI: 1.15-1.44) versus patients in profile 4. Distinct profiles of SVI subtheme characteristics were independently associated with postoperative outcomes among Medicare beneficiaries undergoing HP surgery, even among patients with similar overall composite SVI scores.

Labiner HE ，Hyer M ，Cloyd JM ，Tsilimigras DI ，Dalmacy D ，Paro A ，Pawlik TM ... -  《-》

Profiles in social vulnerability: The association of social determinants of health with postoperative surgical outcomes.

The association of different social vulnerability subthemes (ie, socioeconomic status, household composition and disability, minority status and language, and housing and transportation) with surgical outcomes remains poorly defined. The current study aimed to identify distinct profiles of social vulnerability among Medicare beneficiaries and define the association of these profiles with postoperative outcomes. The Medicare 100% Standard Analytic Files were used to identify patients undergoing lung resection, coronary artery bypass grafting, abdominal aortic aneurysm repair, and colectomy between 2013 and 2017. A cluster analysis was performed based on ranked scores across the 4 subthemes of the Centers for Disease Control and Prevention social vulnerability index. The likelihood of complications, extended length of stay, readmission, and mortality were assessed relative to cluster vulnerability profiles. Among 852,449 Medicare beneficiaries undergoing surgery, median social vulnerability index among patients in the cohort was 49 (interquartile range: 24-74); cluster analysis revealed 5 vulnerability profiles that had heterogeneity in the vulnerability subthemes, even among patients with similar overall social vulnerability index scores. Postoperative outcomes differed across the 5 vulnerability profiles, with patients in the profiles characterized by higher overall vulnerability having worse postoperative outcomes. In particular, risk of complications (profile 1, 31.9% vs profile 5, 34.0%), extended length of stay (profile 1, 21.7% vs profile 5, 24.3%), 30-day readmission (profile 1, 12.6% vs profile 5, 13.2%), and 30-day mortality (profile 1, 4.0% vs profile 5, 4.7%) was greater among patients with the highest vulnerability (all P < .01). Of note, surgical outcomes varied among patients who resided in communities with similar average social vulnerability index scores (social vulnerability index 49-54). In particular, patients in social vulnerability profile 4 had 26% increased odds of 30-day mortality compared to social vulnerability profile 2 patients (odds ratio 1.26, 95% confidence interval 1.21-1.30). Additionally, profile 3 patients had 15% higher odds of 30-day mortality versus profile 2 patients (odds ratio 1.15, 95% confidence interval 1.10-1.20). Postoperative outcomes differed across patients based on cluster vulnerability profiles. Despite similar overall aggregate social vulnerability index scores, cluster analysis was able to discriminate various social determinants of health subthemes among patients who resided in "average" vulnerability communities that stratified patients relative to risk of adverse postoperative events.

Paro A ，Hyer JM ，Diaz A ，Tsilimigras DI ，Pawlik TM ... -  《-》

The association of neighborhood social vulnerability with surgical textbook outcomes among patients undergoing hepatopancreatic surgery.

Previous studies have largely examined social determinants of health relative to individual surgery quality metrics. We sought to characterize possible differences in "textbook outcome," a composite measure of quality, relative to social vulnerability index. The Medicare Standard Analytical Files from 2013 to 2017 were used to identify beneficiaries who underwent hepatopancreatic surgery. Individuals were stratified into 3 groups dependent on their social vulnerability (low, average, high). Textbook outcome was defined as absence of postoperative surgical complications, prolonged length of stay, 90-day readmission, and 90-day mortality. Among 32,142 patients who underwent hepatopancreatic surgery, 18,841 (58.6%) patients underwent a pancreatectomy, whereas 13,301 (41.4%) underwent a hepatectomy. The overall incidence of textbook outcome after hepatopancreatic surgery was 51.2% (n = 16,445). Patients with a low social vulnerability index who underwent pancreatic resection more often achieved a textbook outcome versus patients who had an average or high social vulnerability index (low social vulnerability index: 48.3% vs average social vulnerability index: 46.5% vs high social vulnerability index: 44.9%; P = .004). The odds of obtaining a textbook outcome after pancreatic surgery was inversely associated with degree of vulnerability (low social vulnerability index, referent: average social vulnerability index: odds ratio 0.94, 95% confidence interval 0.87-1.00 vs high social vulnerability index: odds ratio 0.89, 95% confidence interval 0.82-0.97). Similarly, social vulnerability index was independently associated with textbook outcome after hepatic resection. Likewise, there were increased risks and incidence of various postoperative surgical outcomes, including 90-day mortality and complications as the social vulnerability index increased. Only one-half (51.2%) of Medicare beneficiaries achieved the composite quality textbook outcome metric. Social vulnerability was associated with lower attainment of textbook outcome and an increased risk of adverse postoperative surgical outcomes after hepatopancreatic surgery.

Azap RA ，Paredes AZ ，Diaz A ，Hyer JM ，Pawlik TM ... -  《-》

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

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

Diaz A ，Hyer JM ，Tsilimigras D ，Pawlik TM ... -  《-》

Patient Social Vulnerability and Hospital Community Racial/Ethnic Integration: Do All Patients Undergoing Pancreatectomy Receive the Same Care Across Hospitals?

The objective of the current study was to characterize the role of patient social vulnerability relative to hospital racial/ethnic integration on postoperative outcomes among patients undergoing pancreatectomy. The interplay between patient- and community-level factors on outcomes after complex surgery has not been well-examined. Medicare beneficiaries who underwent a pancreatectomy between 2013 and 2017 were identified utilizing 100% Medicare inpatient files. P-SVI was determined using the Centers for Disease Control and Prevention criteria, whereas H-REI was estimated using Shannon Diversity Index. Impact of P-SVI and H-REI on "TO" [ie, no surgical complication/extended length-of-stay (LOS)/90-day mortality/90-day readmission] was assessed. Among 24,500 beneficiaries who underwent pancreatectomy, 12,890 (52.6%) were male and median age was 72 years (Interquartile range: 68-77); 10,619 (43.3%) patients achieved a TO. The most common adverse postoperative outcome was 90-day readmission (n = 8,066, 32.9%), whereas the least common was 90-day mortality (n = 2282, 9.3%). Complications and extended LOS occurred in 30.4% (n = 7450) and 23.3% (n = 5699) of the cohort, respectively. Patients from an above average SVI county who underwent surgery at a below average REI hospital had 18% lower odds [95% confidence interval (CI): 0.74-0.95] of achieving a TO compared with patients from a below average SVI county who underwent surgery at a hospital with above average REI. Of note, patients from the highest SVI areas who underwent pancreatectomy at hospitals with the lowest REI had 30% lower odds (95% CI: 0.54-0.91) of achieving a TO compared with patients from very low SVI areas who underwent surgery at a hospital with high REI. Further comparisons of these 2 patient groups indicated 76% increased odds of 90-day mortality (95% CI: 1.10-2.82) and 50% increased odds of an extended LOS (95% CI: 1.07-2.11). Patients with high social vulnerability who underwent pancreatectomy in hospitals located in communities with low racial/ethnic integration had the lowest chance to achieve an "optimal" TO. A focus on both patient- and community-level factors is needed to ensure optimal and equitable patient outcomes.

Hyer JM ，Tsilimigras DI ，Diaz A ，Dalmacy D ，Paro A ，Pawlik TM ... -  《-》