To clarify the associations between lower CRRT dose-intensity thresholds and mortality, while addressing discrepancies in reported hazard ratios and study methodologies.
Approach:
Cox Hazard Ratios: The article discusses the Cox hazard ratios reported by Okamoto et al. and Faria and Libório, emphasizing that the combined estimate is a hazard ratio, not an odds ratio.
Data Extraction Protocol: The authors acknowledge the limitations in their protocol regarding the selection of adjusted models and the need for clarity in reporting.
Comparative Analysis: The authors compare estimands from different studies, highlighting the differences in methodologies and the implications for meta-analysis.
Risk of Bias Assessment: The study by Faria and Libório was judged to have a serious risk of bias, particularly in the selection of reported results.
Literature Search Update: The authors note a subsequent study by Tran et al. that aligns with their primary analysis but does not provide independent confirmation.
Key Findings:
The combined hazard ratio from Okamoto et al. and Faria and Libório indicates a significant association with mortality.
Discrepancies in reported hazard ratios and methodologies require clarification.
The 13 mL/kg/hr threshold is considered exploratory and not yet established.
Ongoing randomized trials are investigating the lower limit of CRRT dose-intensity.
Interpretation:
The findings indicate that while lower CRRT dose-intensity may be associated with increased mortality, further investigation is necessary to establish any definitive conclusions.
Limitations:
The retrospective nature of the data analysis in the studies reviewed.
Potential biases in the studies reviewed.
The exploratory nature of the findings related to the 13 mL/kg/hr threshold.
Conclusion:
No definitive threshold for CRRT dose-intensity has been established.
