Table 1. Defining the sixteen latent classes and calculating their sero-prevalence rates.

Class No.	Latent class definition	Seroprevalence
		Median (95% CI)*	Mean
Class 1	Mtb**+, All antibodies+	15.9 (9.8, 24.0)	16.2
Class 2	Mtb+, ESAT6+, CFP10+, PE-PGRS11+	1.3 (0.1, 4.3)	1.5
Class 3	Mtb+, ESAT6+, CFP10+, PE-PGRS17+	0.4 (0.0, 2.1)	0.6
Class 4	Mtb+, ESAT6+, PE-PGRS11+, PE-PGRS17+	0.8 (0.0, 4.4)	1.2
Class 5	Mtb+, CFP10+, PE-PGRS11+, PE-PGRS17+	3.1 (0.2, 10.3)	3.7
Class 6	Mtb+, ESAT6+, CFP10+	0.8 (0.0, 3.2)	1.0
Class 7	Mtb+, ESAT6+, PE-PGRS11+	0.6 (0.0, 3.2)	0.9
Class 8	Mtb+, ESAT6+, PE-PGRS17+	0.5 (0.0, 2.3)	0.7
Class 9	Mtb+, CFP10+, PE-PGRS11+	0.5 (0.0, 2.6)	0.7
Class 10	Mtb+, CFP10+, PE-PGRS17+	0.4 (0.0, 2.3)	0.6
Class 11	Mtb+, PE-PGRS11+, PE-PGRS17+	11.9 (4.2, 18.5)	11.7
Class 12	Mtb+, ESAT6+	0.7 (0.0, 3.5)	1.0
Class 13	Mtb+, CFP10+	0.5 (0.0, 2.6)	0.7
Class 14	Mtb+, PE-PGRS11+	0.7 (0.0, 3.1)	0.9
Class 15	Mtb+, PE-PGRS17+	4.8 (0.2, 11.8)	5.1
Class 16	Mtb-, All antibodies-	53.6 (44.6, 62.8)	53.6

Latent class definition and the seroprevalence rate for each class thus defined in the LCA model for studying TB in Asian elephants in southern India. The latent classes are different combinations of the latent variables (i.e. true presence of the antibodies) which are present if M. tuberculosis infection is present. *Median estimate is at the 50% quantile while the 2.5% and 97.5% quantiles define a 95% credible interval (CI). **M. tuberculosis infection.