title: CRB-65 predicts death from community-acquired pneumonia.
abstract: OBJECTIVE
  The study was performed to validate the CURB, CRB and CRB-65 scores for the prediction of death from community-acquired pneumonia (CAP) in both the hospital and out-patient setting.
  
  
  METHODS
  Data were derived from a large multi-centre prospective study initiated by the German competence network for community-acquired pneumonia (CAPNETZ) which started in March 2003 and were censored for this analysis in October 2004.
  
  
  METHODS
  Out- and in-hospital patients in 670 private practices and 10 clinical centres.
  
  
  METHODS
  Analysis was done for n = 1343 patients (n = 208 out-patients and n = 1135 hospitalized) with all data sets completed for the calculation of CURB and repeated for n = 1967 patients (n = 482 out-patients and n = 1485 hospitalized) with complete data sets for CRB and CRB-65.
  
  
  METHODS
  None. 30-day mortality from CAP was determined by personal contacts or a structured interview.
  
  
  RESULTS
  Overall 30-day mortality was 4.3% (0.6% in out-patients and 5.5% in hospitalized patients, P < 0.0001). Overall, the CURB, CRB and CRB-65 scores provided comparable predictions for death from CAP as determined by receiver-operator-characteristics (ROC) curves. However, in hospitalized patients, CRB misclassified 26% of deaths as low risk patients. Availability of the CRB-65 score (90%) was far superior to that of CURB (65%), due to missing blood urea nitrogen values (P < 0.001).
  
  
  CONCLUSIONS
  Both the CURB and CRB-65 scores can be used in the hospital and out-patients setting to assess pneumonia severity and the risk of death. Given that the CRB-65 is easier to handle, we favour the use of CRB-65 where blood urea nitrogen is unavailable.
authors.affiliation: HELIOS Clinic Emil v. Behring, Respiratory Diseases Clinic Heckeshorn, Berlin, Germany.
authors.forename: T T
authors.initials: TT
authors.lastname: Bauer
authors.forename: S
authors.initials: S
authors.lastname: Ewig
authors.forename: R
authors.initials: R
authors.lastname: Marre
authors.forename: N
authors.initials: N
authors.lastname: Suttorp
authors.forename: T
authors.initials: T
authors.lastname: Welte
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001806:Blood Urea Nitrogen; D017714:Community-Acquired Infections / Q000401:mortality; D003657:Decision Making; D005260:Female; D005858:Germany / Q000453:epidemiology; D006760:Hospitalization; D006801:Humans; D008297:Male; D008875:Middle Aged; D010044:Outpatient Clinics, Hospital; D011014:Pneumonia / Q000401:mortality*; D011379:Prognosis; D011446:Prospective Studies; D012372:ROC Curve; D012307:Risk Factors; D012720:Severity of Illness Index