Time-dependent predictive performance of inflammatory markers for 30-day all-cause mortality in patients with suspected infection in a Japanese emergency department: a retrospective cohort study

These findings suggest the potential utility of CRP for ruling in high-risk patients within 6 hours from symptom onset, and of RDW for both ruling in and ruling out patients after 72 hours, thereby suggesting that time-dependent variations are important when interpreting inflammatory markers in emergency care settings. However, caution is needed when interpreting these findings because of the retrospective design of this study and potential selection bias.