Background
Sepsis remains a leading cause of mortality in ICUs worldwide, with significant research focused on improving outcomes through early detection and treatment protocols. However, the impact of cultural and linguistic diversity (CaLD) on sepsis outcomes has been less explored. Previous studies have suggested that language barriers and cultural differences might lead to disparities in healthcare access and quality, potentially worsening outcomes for CaLD patients. This study challenges these assumptions by examining the relationship between CaLD status and sepsis outcomes in a multicultural population.
Study Design
The study was a multicenter, retrospective cohort analysis conducted across adult ICUs in the South Western Sydney Local Health District (SWSLHD) in Australia. The cohort included all adult patients (≥18 years) admitted with sepsis between January 1, 2012, and December 31, 2022. A total of 5,971 sepsis-coded admissions were analyzed, with 2,792 (46.75%) classified as CaLD patients. The primary outcome was in-hospital mortality, while secondary outcomes included ICU and hospital length of stay (LOS) and 90-day ICU readmission rates. Propensity score matching was used to balance covariates between CaLD and non-CaLD groups.
Key Findings
The study revealed unexpected results: in-hospital mortality was 16% for CaLD patients compared to 17% for non-CaLD patients. After adjustment for confounders, the CaLD group had a 2.2 percentage point lower risk of mortality (RD, -0.022; 95% CI, 0.044 to -0.0005; p = 0.05), equating to a 12.4% relative risk reduction (RR, 0.876; 95% CI, 0.763-0.989; p < 0.001). Additionally, CaLD patients had a significantly shorter ICU LOS by 0.53 days (95% CI, -0.836 to -0.226; p < 0.001). Subgroup analysis identified North African/Middle Eastern patients as the primary drivers of this protective effect.
Expert Commentary
These findings contradict the widely held belief that cultural and linguistic barriers inherently worsen healthcare outcomes. Potential explanations include stronger family support networks in some CaLD communities, earlier healthcare-seeking behaviors, or unmeasured socio-cultural protective factors. However, the study’s retrospective design limits causal inference, and further prospective research is needed to validate these observations.
Conclusion
This study highlights the complex interplay between cultural diversity and sepsis outcomes, suggesting that CaLD status may confer unexpected protective benefits in ICU settings. These findings underscore the need for culturally tailored healthcare strategies and further investigation into the mechanisms behind these disparities. Future research should explore specific cultural practices or social determinants that contribute to improved outcomes in CaLD populations.
Funding and Registration
The study was conducted within the SWSLHD and published in Critical Care Medicine. The original citation is: Sharma A, Hanly M, Bhonagiri D. The Impact of Cultural and Linguistic Diversity on Sepsis Outcomes in Patients Admitted to ICUs: A Multicenter, Retrospective Cohort Study. Critical Care Medicine. 2026; PMID: 41972863.
