. Author manuscript; available in PMC: 2022 Jul 21.

Published in final edited form as: Pediatrics. 2020 Jan;145(1):e20191930. doi: 10.1542/peds.2019-1930

TABLE 4.

Incidence Rates per 100 000 Person-Years for Single Test and Combination Test Results in Participants Treated and Untreated for LTBI

Test Result	All Participants		Untreated			Treated^a
	No. Cases	IR^b (95% CI)	No. Cases	No. Participants	No. PY	No. Cases	No. Participants	No. PY

Single test results
TST+	2	49 (12–197)	1	630	2639	1	328	1414
TST−	2	19 (5–75)	0	2604	10 545	2	31	122
QFT-GIT+	3	200 (65–620)	1	124	524	2	231	976
QFT-GIT−	1	8 (1–54)	0	3088	12 563	1	128	560
T-SPOT+	2	189 (47–755)	1	78	333	1	173	726
T-SPOT−	2	15 (4–60)	0	3082	12 514	2	182	792
Combination test results
TST+ and IGRA+	2	154 (39–616)	1	97	413	1	209	885
TST+ and IGRA−	0	0	0	533	2226	0	119	528
TST− and IGRA+	1	389 (55–2762)	0	33	135	1	30	121
TST− and IGRA−	1	10 (1–68)	0	2571	10 410	1	NA	NA

IR, incidence rate; NA, not available; PY, person-years; −, negative; +, positive.

Completed LTBI treatment or was on LTBI treatment when diagnosed with tuberculosis.

Number of tuberculosis cases per 100 000 person-years.