Table 4 HLH/MAS Evidence-Based Guideline Quality Metrics

Length of hospital stay (days)

Hospital readmission within 60 days (Y/N)

Time to HLH/MAS diagnosis (days)

Time to initiation of HLH/MAS directed therapy (days)

Fever duration (days)

Ferritin decrease by 50% of maximum during hospital stay (Y/N)

Time to decrease of ferritin by 50% of maximum (days)

Time to CRP < 1 mg/dL (days)

Need for higher level of care such as ICU/ICP (Y/N)

Mortality (Y/N)