TABLE 1.

Comparisons of clinical and epidemiological data of Klebsiella pneumoniae isolates from carbapenemase-producing cases and carbapenem-susceptible controls^a

Parameter	No. of cases (n = 90)	No. of controls (n = 88)	OR	95% CI	P
Age (yrs)
<18	0	3	0.32	0.03–3.12	0.30
>65	65	44	2.6	1.49–4.85	0.002
Sex
Female	40	45	0.76	0.42–1.38	0.37
Clinical relevance
Infected	84	86	0.32	0.64–1.66	0.16
Hospital location
ICU	27	11	3	1.38–6.52	0.004
Outpatient/emergency department	22	34	0.51	0.27–0.98	0.04
Previous hospital admission in the last 6 mo	56	33	2.7	1.50–5.03	0.001
Sample source
Urine	42	47	0.76	0.42–1.38	0.37
Blood	16	22	0.65	0.31–1.34	0.24

^aBoldface indicates statistically significant differences. OR, odds ratio; 95% CI, 95% confidence interval; ICU, intensive care unit.