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Table 1
Increases in skin-fold thickness and corresponding results of tuberculin skin tests
Group	Goat	ΔAv^a	ΔBov^b	ΔBov-ΔAv	CIT	SIT
Vaccinated	1	14.2	22.6	8.4	+	+
	2	15.2	26.0	10.8	+	+
	3	17.6	20.9	3.3	+	+
	4	10.6	19.5	8.9	+	+
	5	16.2	18.1	1.9	+	+
	6	14.5	16.5	2.0	+	+
	7	6.2	14.2	8.0	+	+
	8	14.6	17.4	2.8	+	+
	9	13.2	19.4	6.2	+	+
	10	22.0	21.7	−0.3	- ^e	+
Mean (95% CI)	14.4 (11.9-17)*^f	19.6 (17.5-21.7)	5.2 (2.9-7.5)**
Unvaccinated	11	11.3	19.7	8.4	+	+
	12	15.0	24.1	9.1	+	+
	13	3.3	14.5	11.2	+	+
	14	9.8	18.3	8.5	+	+
	15	11.3	21.2	9.9	+	+
	16	8.7	24.6	16.0	+	+
	17	11.4	19.1	7.7	+	+
	18	10.1	22.5	12.4	+	+
	19	14.6	25.8	11.2	+	+
	20	12.7	21.6	8.9	+	+
	Mean (95% CI)	10.8 (8.8-12.9)	21.1 (19–23.2)	10.3 (8.8-11.9)

Test results are scored as (−) negative or (+) positive.

^a ΔAv, increase in skin-fold thickness (mm) 72 h after PPD-A application.

^b ΔBov, increase in skin-fold thickness (mm) 72 h after PPD-B application.

^c CIT, Cervical comparative intradermal test.

^d SIT, Single intradermal test.

^e Avian reactor.

^f *p < 0.05; **p < 0.005 (unpaired two-sample Student’s t-test).

Pérez de Val et al. BMC Veterinary Research 2012 8:191 doi:10.1186/1746-6148-8-191

Table 1