Table I.

Age distribution of the patients with K. pneumoniae UTI.

Age interval	ESBL+ KP (n=34)	ESBL- KP (n=41)	P-value	OR (95% CI)
0-20 years	1 (2.9%)	5 (12.1%)	0.0855	0.218 (0.024-1.966)
21-50 years	3 (8.8%)	4 (9.7%)	0.4528	0.895 (1.186-4.307)
51-70 years	10 (29.4%)	17 (41.4%)	0.1464	0.588 (0.224-1.543)
≥71 years	20 (58.8%)	15 (36.5%)	0.0303	2.476 (0.974-6.294)
Mean age	70.1	62.6	0.0365

All data are expressed as n (%). UTI, urinary tract infections; KB, Klebsiella pneumoniae; ESBL, extended-spectrum β-lactamase; ESBL⁺ KP, ESBL-producing K. pneumoniae; ESBL^- KP, non-ESBL producing KP. OR, odds ratio; CI, confidence interval. Significant P-values are presented in bold print.