Table 5.

Multivariate logistic regression illustrating Characteristics household contacts aged less than 5 years of Index cases of tuberculosis (TB) at Kisumu County, 2014-2015 by Isoniazid Preventative Therapy (IPT) initiation status.

Characteristics	IPT/Total IPT eligible 51/337 (15%); n/N (%)	Crude Odds Ratio (95% CI)	P value	Adjusted Odds Ratio (95% CI)	P value
Age group
<2 year	25/127(20)	1.6 (0.7-3.7)	0.18*
2.0-3.9 years	17/142(12)	0.9 (0.4-2.1)
4.0-4.9 years	9/68(13)	Ref
Sex
Male	21/175(12)	Ref	0.09*	Ref	0.05
Female	30/162(19)	1.7 (1.0-3.1)		1.9 (1.0-3.6)
Region
Kisumu Urban	28/230(12)	Ref	0.02*	Ref	<0.01
Kiusmu Rural	23/107(22)	1.9 (1.1-3.6)		2.6 (1.4-5.1)
Relationship to index case*
Parent, sibling or grandparent	41/222(19)	2.4 (1.1-4.9)	0.01*	2.6 (1.2-5.5)	0.02
Other relation/non relative	10/115(9)	Ref		Ref
Duration lived with index case
<90 days	14/107(13)	Ref	0.5
90+days	37/230(16)	1.2 (0.6-2.4)
Contact No. of hours per day
<8 hours	14/104(13)	Ref	0.6
8-24 hours	37/233(16)	1.2 (0.6-2.4)
Shared bedroom with index case
Yes	31/206(15)	1.1 (0.6-1.9)	0.9
No	20/131(15)	Ref
BCG
Given scar present	42/301(14)	Ref	0.1*	Ref	0.07
Given scar absent	8/28(29)	2.5 (1.0-5.9)		2.9 (1.2-7.5)
Not given	1/8(13)	0.9 (0.1-7.3)		1.1 (0.1-10.3)
Ever received IPT
Yes	6/16(38)	3.7 (1.3-10.6)	0.01*	2.9 (0.9-8.7)	0.06
No	45/321(14)	Ref		Ref
HIV status**
Positive	2/13(15)	Ref	0.9
Negative	41/281(15)	1.1 (0.2-4.9)
TB Symptoms
Present	11/91(12)	Ref	0.3
Absent	40/246(16)	1.4 (0.7-2.9)

^*Entered into the multivariate logistic model

^**Missing data for 43 contacts. History of prior TB treatment excluded due to no participants with prior TB being initiated on IPT.