Table 1.

Characteristics of included studies with the outcome of the studies (n = 11)

The author with a publication year	Study region	Study design	Study population	Follow-up time (months)	Sample size	TB case	Total PYO	IR per 100 PYO	Study quality
Ayalaw et al., 2015 [13]	Amhara	RFS	Children	72	271	52	1100.5	4.73	Good
Endalamaw et al., 2018 [17]	Amhara	RFS	Children	60	352	34	1294.7	2.63	Good
Beshir et al., 2019 [15]	Oromia	RFS	Children	60	428	67	1109.6	6.04	Good
Alemu et al., 2016 [18]	Amhara	RFS	Children	60	645	79	1854.0	4.26	Good
Jerene et al., 2017 [19]	AA&SNNP	RFS	Adults	84	660	64	2843.5	2.25	Good
Ahmed et al., 2017	Afar	RFS	Adults	84	451	119	1377.4	8.64	Good
Temesgen, 2017	Amhara	RFS	Adults	60	492	83	1285.5	6.46	Good
Dalbo and Tamiso, 2016 [20]	SNNP	RFS	Adults	72	496	106	1977.6	5.36	Good
Assefa et al., 2014 [21]	Amhara	RFS	Adults	42	400	136	1181.8	2.20	Good
Alene et al., 2013 [11]	Amhara	RFS	Adults	60	470	26	1724.1	7.89	Good
Kassa et al., 2012 [22]	AA	RFS	Adults	60	4210	270	8792.3	3.07	Good

RFS retrospective follow-up study, PMO person month observation, IR incidence rate