Table 2. Mycobacterial culture results for 300 slaughtered cattle and PCR results of acid-fast bacilli isolates stratified by the abattoir, age, breed, and sex of slaughtered cattle in Rwanda.

Variables	Categories	Mycobacterial culture and AFB results		PCR results of AFB isolates for detection of Mycobacterium spp.				PCR results of AFB isolates for detection of Mycobacterium tuberculosis complex (MTBC)
		Growth % (n)	AFB positive	Positive % (n)	95% CI	Chi 2	p-value	Positive n (%)	95% CI	Chi 2	p-value
Abattoirs	High throughput	53.9 (152/282)	16.7 (47/282)	80.9 (38/47)	0.3–4.8	0.80	1.0	10.6 (5/47)	0.0–16.3	0.00	1.00
	Low throughput	72.2 (13/18)	22.2 (4/18)	75.0 (3/4)				0.0 (0/4)
	Total	55.0 (165/300)	17.0 (51/300)	80.4 (41/51)				9.8 (5/51)
Provinces	East	55.7 (39/70)	17.1 (12/70)	83.3 (10/12)	-	1.60	0.9	0.0 (0/12)	-	10.20	0.04
	West	62.7 (44/70)	25.7 (18/70)	72.2 (13/18)				22.2 (4/18)
	North	56.0 (28/50)	16.0 (8/50)	87.5 (7/8)				0.0 (0/8)
	South	45.0 (36/80)	13.8 (11/80)	81.8 (9/11)				0.0 (0/11)
	Kigali city	60.0 (18/30)	6.7 (2/30)	100.0 (2/2)				50.0 (1/2)
	Total	55.0 (165/300)	17.0 (51/300)	80.4 (41/51)				9.8 (5/51)
Age	Young	65.5 (19/29)	20.7 (6/29)	50.0 (3/6)	0.2–1.7	2.10	0.1	0.0 (0/6)	0.0–9.3	0.02	1.00
	Adult	53.8 (146/271)	16.6 (45/271)	84.4 (38/45)				11.1 (5/45)
	Total	55.0 (165/300)	17.0 (51/300)	80.4 (41/51)				9.8 (5/51)
Sex	Female	55.6 (159/286)	16.8 (48/286)	79.2 (38/48)	-	0.01	1.0	8.3 (4/48)	0.4–74.8	0.20	0.30
	Male	42.9 (6/14)	21.4 (3/14)	100.0 (3/3)				33.3 (1/3)
	Total	55.0 (165/300)	17.0 (51/300)	80.4 (41/51)				9.8 (5/51)
Breeds	Ankole	54.5 (42/47)	13.0 (10/77)	80.0 (8/10)	-	0.80	1.0	0.0 (0/10)	-	1.90	0.70
	Crossbred	56.2 (114/208)	18.7 (38/203)	79.0 (30/38)				13.2 (5/38)
	Friesians	42.1 (8/19)	15.0 (3/20)	100.0 (3/3)				0.0 (0/3)
	Total	55.0 (165/300)	17.0 (51/300)	80.4 (41/51)				9.8 (5/51)