Table 4.

Multivariable logistic regression showing association of β-lactamase infection with two different age groups.

Group	Beta-lactamase infection	Age		p-value	Odds ratio 95% CI (lower-upper)
		(≤ 36) months	(36–60) months	Group 3 as reference
1	ESBL +	25	2	0.215	3.612 (0.472–34.28)
	ESBL -	10	3	0.215
2	ESBL +	20	7	0.498	0.527 (0.0652- 2.87)
	ESBL -	11	2
1	MBL +	18	2	0.023*	2.957 (1.153–7.898)
	MBL -	17	3
2	MBL +	12	1	0.472	1.438 (0.537–3.922)
	MBL -	19	8
1	AmpC +	10	3	0.331	1.648 (0.605–4.614)
	AmpC -	25	2
2	AmpC +	7	0	0.591	0.733 (0.232–2.251)
	AmpC +	24	9

*Statistically significant.