title: [To evaluate the auxiliary diagnostic value of Japanese respiratory society scoring system for the rapid diagnosis of Mycoplasma pneumoniae pneumonia in inpatients with community acquired pneumonia].
abstract: OBJECTIVE
  To evaluate the auxiliary diagnostic value of Japanese respiratory society (JRS) scoring system for the rapid diagnosis of Mycoplasma pneumoniae pneumonia (MP) in inpatients with community acquired pneumonia (CAP).
  
  
  METHODS
  The clinical data of inpatients with CAP between January 2013 and Novermber 2013 were retrospectively analyzed. The gold standard for identification of MP infection was determined by both positive culture and real time polymerase chain reaction (PCR) methods. Blood and sputum culture were used to detect other bacteria and fungi, and real time PCR to detect Chlamydia and Legionella pneumonia and the common respiratory viruses. Diagnostic test results consistency inspection was performed by Kappa test and continuous variable analysis was performed using t test.
  
  
  RESULTS
  Data from 139 CAP inpatients were analyzed. An aetiological diagnosis was made for 61 patients (43.9%). Thirty-five cases (25.2%) were diagnosed as MP infection by the gold standard, while 72 cases (52.0%) by the JRS scoring system. The sensitivity of JRS scoring system for the diagnosis of MP infection was 85.7% (30/35), specificity 59.6% (62/104), positive predictive value 41.7% (30/72)and negative predictive value 92.5% (62/67). According to age, for the patients younger than 40 years old, the sensitivity of JRS routine scoring system for the diagnosis of MP infection was 24/24, specificity was 4/29, positive predictive value 24/49 and negative predictive value was 4/4.
  
  
  CONCLUSIONS
  The JRS scoring system provides an auxiliary value for the identification of MP pneumonia. It has a high sensitivity and a strong negative predictive value. For patients younger than 40 yrs with low grades of JRS swring system. MP infection can be almost excluded from.
authors.affiliation: Department of Respiratory and Critical Care Medicine, the PLA 307 Hospital, Beijing 100071, China.
authors.forename: Xin
authors.initials: X
authors.lastname: Yuan
authors.forename: Xin
authors.initials: X
authors.lastname: Jin
authors.forename: Wenkai
authors.initials: W
authors.lastname: Niu
authors.forename: Qian
authors.initials: Q
authors.lastname: Cui
authors.forename: Huiying
authors.initials: H
authors.lastname: Liu
authors.forename: Jing
authors.initials: J
authors.lastname: Zheng
authors.forename: Zhizhi
authors.initials: Z
authors.lastname: Heng
authors.affiliation: Email: mlp1604@sina.com.
authors.forename: Changqing
authors.initials: C
authors.lastname: Bai
mesh_terms: D017714:Community-Acquired Infections; D006801:Humans; D007297:Inpatients; D007877:Legionnaires' Disease; D009177:Mycoplasma pneumoniae; D011019:Pneumonia, Mycoplasma; D060888:Real-Time Polymerase Chain Reaction; D012137:Respiratory System; D012189:Retrospective Studies; D012680:Sensitivity and Specificity