Table 1.

Patients’ demographic and baseline characteristics

Code of Patient	Agea	Sex	Relationship	Complains of TB symptoms	Diagnostic time	Discovery delayb	Resistant patternc	TSTd	Treatment outcome
N1	74	Male	Neighbor	15 February 2011	21 April 2011	–	–	–	Failure
N2	61	Male	Neighbor	18 January 2012	18 February 2012	–	H/R/E/S	–	Failure
N3	64	Male	Neighbor	27 September 2013	9 October 2013	–	–	–	Failure
N4	59	Female	Neighbor	18 June 2015	15 July 2015	–	–	–	Failure
Index patient (Xu)	16	Female	–	1 March 2014	8 April 2014	37 days	H/R/E/S	–	Cure
P1 (Zhao)	15	Male	Classmates	15 January 2016	2 April 2016	77 days	H/R/E/S	Negative	Cure
P2 (Jiang)	16	Female	Classmates	12 March 2016	5 April 2016	23 days	H/R/E/S	Negative	Cure
P3 (Zhang)	17	Female	Classmates	1 December 2016	21 February 2017	81 days	H/R/E/S	Negative	Cure

^aThe record of the age of the patient was at the diagnostic time

^bDiscovery delay refers to the days between the time of diagnosis and symptoms

^cAbbreviations: H isoniazid, R rifampicin, E ethambutol, S streptomycin, N1, N3, and N4 without DST results

^dTST, tuberculin skin test; index patient, N1, N3, and N4 had no accepted TST test

-: not applicable