Racial and sex disparities in resource utilization and outcomes of multi-vessel percutaneous coronary interventions (a 5-year nationwide evaluation in the United States).

Background: There is a paucity of data regarding the racial and sex disparities in the outcomes of multi-vessel percutaneous coronary interventions (MVPCI).
Methods: The National Inpatient Sample (NIS) was examined for the years 2010 to 2014 to incorporate adult MVPCI-related hospitalizations using International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) procedure codes. We excluded patients with the missing race or gender data from the final scrutiny. Discharge weights were used to obtain the national estimations. The principal outcomes were MVPCI-related racial and gender disparities in terms of the in-hospital mortality and complications, and diagnostic and therapeutic healthcare resource utilization. Secondary outcomes were the length of hospital stay (LOS) and hospitalization charges. We used the Chi-square test and t -test/ANOVA test to equate dichotomous and continuous variables respectively. A two-tailed P of <0.05 was considered clinically significant.
Results: An estimated 769,502 MVPCI-related hospitalizations were recorded from 2010 to 2014 after excluding patients with the missing data (70,954; 8.4%). Black male and female were the youngest (62±13, 64±14 years). The highest non-elective admissions (M: 72.8%, F: 71.2%) were reported among Hispanics. Non-whites showed a higher proportion of comorbidities with lower resource utilization than whites. Hispanic males (OR 1.23) showed the highest odds of the in-hospital mortality whereas among females, Asians (OR 1.51), blacks (OR 1.35), followed by Hispanics (OR 1.22) revealed higher odds of in-hospital mortality. Odds of cardiac complications were highest amongst Asians (M: OR 1.19, F: OR 1.40). Black (6±8 days) and Hispanic (7±9 days) showed the highest length of stay among males and females respectively. Total hospitalization charges were highest among Asians. There was a greater increase in the all-cause mortality in non-whites from 2010 to 2014.
Conclusions: This study determines the existence of racial disparities in resource utilization and outcomes in MVPCI. There is an instant need for interventions designed to govern these healthcare discrepancies.
Competing Interests: Conflicts of Interest: The authors have no conflicts of interest to declare.