Fig. 2

Group A was studied between March 2011 and December 2013, prior to the introduction of NAAT. * Notified PTB case: The case with suspected PTB reported to Taiwan CDC. * Confirmed PTB case: The case with positive MTB culture of the sputum. * Non-PTB case: The case with negative MTB culture of the sputum. * Unnecessary anti-TB treatment: Any TB medication administered in a notified case with negative result of the final culture, which is considered as prescription error. * Duration of unnecessary anti-TB treatment: The number of days of unnecessary TB medication administered in a notified case with negative result of the final MTB culture, which is considered as the duration of prescription error