The Incidence of Non-Tuberculous Mycobacteria in Infants in Kenya

Table 2

(a) Comparative clinical characteristics of those investigated for presumptive TB and infants with NTM isolated (categorical).

Clinical Characteristics	Presumptive TB	NTM +ve	OR (95%CI)
	N (column %)	N (row%)
	(n=742)	(n=19)
Any TB case (clinical or confirmed)
No	694 (94%)	16 (2.3%)	1 (ref)
Yes	48 (6.5%)	3 (6.3%)	11.6 (3.25, 41.0)
MTBC +ve TB case
No	733 (99%)	17 (2.3%)	1 (ref)
Yes	9 (1%)	2 (22.2%)	48.3 (9.34, 249)
Chest Radiograph
Normal	590 (80%)	13 (2.2%)	1(ref)
Abnormal not TB	110 (15%)	4 (3.6%)	1.71 (0.55, 5.35)
Abnormal TB	35 (5.0%)	2 (5.7%)	2.80 (0.61, 12.9)
missing	7 (0.9%)
Keith Edward TB score
<7	675 (90%)	17 (2.5%)	1 (ref)
>=7	32 (4.3%)	2 (6.3%)	2.62 (0.58, 11.9)
Missing	35 (4.7%)
Reason for TB suspicion
History of hospitalization
No	283 (38%)	8 (3.4%)	1 (ref)
Yes	426 (57%)	11(2.6%)	0.78 (0.31, 1.97)
Missing	33 (5.0%)
TB Contact History
No	579 (78%)	13(2.3%)	1 (ref)
Yes	131 (18%)	6 (4.6%)	2.57 (0.96, 6.88)
Missing	32 (4.0%)
TST results
Negative	555 (76%)	14 (74%)	1 (ref)
Positive	172 (24%)	5 (26%)	1.15 (0.41, 3.25)
TB symptoms
No	530 (71%)	15 (2.8%)	1 (ref)
Yes	180 (24%)	4 (2.2%)	0.85 (0.28, 2.58)
Missing	32 (4.0%)
Nutritional Status at admission
Healthy	379 (51%)	8 (2.1%)	1 (ref)
At risk	195 (27%)	6 (3.0%)	1.48 (0.51, 4.32)
Moderate Acute	113 (15%)	2 (1.8%)	0.84 (0.18, 4.03)
Malnutrition (MAM)
Severe Acute	40 (5%)	3 (7.5%)	3.73 (0.95, 14.7)
Malnutrition (SAM)
Missing	15 (2%)

(b) Comparative clinical characteristics for those investigated for presumptive TB and infants with NTM isolated (continuous variable).

Clinical Characteristic	Categories	n	Mean age (95% CI)	Rank sum p- value/t-test p value
Mean age at TB investigation (months)	NTM negative Presumptive TB	718	9.34 (8.95, 9.74)	0.20
	NTM case	19	11.0 (8.02, 13.9)
	Missing	5