The risk of death at 30 days increases as the score increases:
The CURB-65 has been compared to the pneumonia severity index in predicting mortality from pneumonia. It was shown that the PSI has a higher discriminatory power for short-term mortality, and thus is more accurate for low risk patients than the CURB-65 or its predecessor, the CURB score. However, the PSI is more complicated and requires arterial blood gas sampling amongst other tests; given this, the CURB-65 score is more easily used in primary care settings. A variant of the CURB-65 which omits the urea measurement (CRB-65) is even simpler as it relies only on history and examination findings rather than blood tests.
The CURB-65 is used as a means of deciding the action that is needed to be taken for that patient.
0-1: Treat as an outpatient
2-3: Consider a short stay in hospital or watch very closely as an outpatient
4-5: Requires hospitalization with consideration as to whether they need to be in the intensive care unit
Patients with any type of infection (half of the patients had pneumonia), the risk of death increases as the score increases:
^ abHowell MD, Donnino MW, Talmor D, Clardy P, Ngo L, Shapiro NI (2007). "Performance of severity of illness scoring systems in emergency department patients with infection". Academic Emergency Medicine14 (8): 709–14. doi:10.1197/j.aem.2007.02.036. PMID17576773.
^Aujesky D, Auble TE, Yealy DM, et al. (2005). "Prospective comparison of three validated prediction rules for prognosis in community-acquired pneumonia". Am. J. Med.118 (4): 384–92. doi:10.1016/j.amjmed.2005.01.006. PMID15808136.
^ abEbell MH. (2006). "Outpatient vs. inpatient treatment of community acquired pneumonia.". Fam Pract Manag13 (4): 41–4. PMID16671349.