II. Criteria (Mnemonic: ATLAS)

  1. Age
    1. Score 0: <60 years old
    2. Score 1: 60 to 79 years old
    3. Score 2: >=80 years old
  2. Treatment with Systemic concomitant Antibiotics for >1 day during C. difficile Management
    1. Score 0: No
    2. Score 2: Yes
  3. Leukocytosis
    1. Score 0: <16,000 cells/uL
    2. Score 1: 16,000 to 25,000 cells/uL
    3. Score 2: >25,000 cells/uL
  4. Albumin
    1. Score 0: >35 g/L
    2. Score 1: 26 to 35 g/L
    3. Score 2: <=25 g/L
  5. Serum Creatinine
    1. Score 0: <1.3 mg/dl
    2. Score 1: 1.4 to 2.0 mg/dl
    3. Score 2: >2.1 mg/dl

III. Interpretation: Total Score

  1. Mortality
    1. Score <3: 0% Mortality
    2. Score 3: 3.6% Mortality
    3. Score 4: 4.2% Mortality
    4. Score 5: 8.7% Mortality
    5. Score 6: 10.9% Mortality
    6. Score 7: 14.3% Mortality
    7. Score 8: 56% Mortality

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