Elixhauser-Comorbidity-Index-guideline v.1

Elixhauser Comorbidity Index estimates risk of in hospital mortality.

Maryam Razavi

maryam.razavi@cambio.se

@CambioCDS

To estimate the risk of in hospital mortality based on comorbidities.

Formula: Addition of the selected points: (variables and points) 1. Congestive heart failure: 7 2. Cardiac arrhythmias: 5 3. Valvular disease: -1 4. Pulmonary circulation disorders: 4 5. Peripheral vascular disorders: 2 6. Hypertension: 0 7. Paralysis: 7 8. Neurodegenerative disorders: 6 9. Chronic pulmonary disease: 3 10. Diabetes: No=0, Diabetes without chronic complications=0, Diabetes with chronic complications=0 11. Hypothyroidism: 0 12. Renal failure: 5 13. Liver disease: 11 14. Peptic ulcer disease, no bleeding: 0 15. AIDS/HIV: 0 16. Lymphoma: 9 19. Metastatic cancer: 12 20. Solid tumor without metastasis: 4 21. Rheumatoid arthritis/collagen vascular diseases: 0 22. Coagulopathy: 3 23. Obesity: -4 24. Weight loss: 6 25. Fluid and electrolyte disorders: 5 26. Blood loss anemia: -2 27. Deficiency anemia: -2 28. Alcohol abuse: 0 29. Drug abuse: -7 30. Psychosis: 0 31. Depressions: -3 Interpretation: Elixhauser Comorbidity Index score and probability of inpatient death: -19= 0.37%, >=-18 to <=10: 0.37- 2% >10 to <=0: 1-6% >0 to <=20: 6-16% >20 to <=30: 15-33% >30 to <=40: 32-57% >40 to <=50: 57-79% >50 to <=60: 79-92% >60 to <=70: 92-97% >70 to <=80: 97- 99% >80 to <89: 99-99.41% 89=99.41%,

1. Elixhauser, Anne, et al. "Comorbidity measures for use with administrative data." Medical care (1998): 8-27. 2. van Walraven, Carl, et al. "A modification of the Elixhauser comorbidity measures into a point system for hospital death using administrative data." Medical care (2009): 626-633. 3. Menendez, Mariano E., et al. "Predicting in-hospital mortality in elderly patients with cervical spine fractures: a comparison of the Charlson and Elixhauser Comorbidity Measures." Spine 40.11 (2015): 809-815. 4. Menendez, Mariano E., and David Ring. "A comparison of the Charlson and Elixhauser comorbidity measures to predict inpatient mortality after proximal humerus fracture." Journal of orthopaedic trauma 29.11 (2015): 488-493. 5. Kim, Chang-Yeon, et al. "Predicting adverse events, length of stay, and discharge disposition following shoulder arthroplasty: a comparison of the Elixhauser Comorbidity Measure and Charlson Comorbidity Index." Journal of Shoulder and Elbow Surgery (2018).

OBSERVATION.elixhauser_comorbidity_index.v0