Performance Characteristics of Screened Symptom for Bacteriologically Positive TB, by Age Status, China, 2010.

PPV, positive predictive value; NPV, negative predictive value; AUC, area under the receiver operating characteristic curve In analysis of cough and haemoptysis, the AUC for any duration of cough were significantly larger than for haemoptysis (P<0.01 for both subpopulations) When analysis was conducted in participants under aged 65, the sensitivities of cough of any duration/ Cough or haemoptysis of any duration were significantly higher than that of suspected symptom defined by China NTP (P<0.01). * Compared with participants aged under 65, P<0.05 ** Compared with participants aged under 65, P<0.01 Performance Characteristics of Screened Symptom for Bacteriologically Positive TB, by Age Status, China, 2010.