Table 1.

Characteristics of cases of patients infected with Klebsiella pneumoniae NDM-1 and controls.

Variable	Cases N = 139 (%)	Controls N = 486 (%)	OR	p
Gender, males/females	86 (61.9)/53 (38.1)	324 (66.7)/162 (33.3)	1.233	0.171
Age (years)	41.17 ± 22.74	42.04 ± 25.11		0.714
Diabetes mellitus	34 (24.5)	111 (22.8)	1.094	0.384
Hypertension	40 (28.8)	139 (28.6)	1.009	0.523
Neurological disease	59 (42.4)	154 (31.7)	1.590	0.013
Cardiac disease	33 (23.7)	80 (16.5)	1.580	0.035
Lung disease	46 (33.1)	151 (31.1)	1.097	0.361
Liver disease	7 (5)	28 (5.8)	0.867	0.467
Biliary disease	5 (3.6)	25 (5.1)	0.688	0.309
Acute renal failure	54 (38.8)	75 (15.4)	3.481	<0.001*
Chronic renal failure	15 (10.8)	58 (11.9)	0.893	0.421
Transplant	5 (3.6)	8 (1.6)	2.229	0.140
Immunosuppression	21 (15.1)	55 (11.3)	1.395	0.145
Alcoholism	24 (17.3)	125 (25.7)	0.603	0.023
Cancer	6 (4.3)	38 (7.8)	0.532	0.105
Previous hospitalization (6 months)	48 (34.5)	155 (31.9)	1.126	0.313
Previous surgery (1 month)	18 (12.9)	43 (8.8)	1.533	0.103
Glasgow coma scale	11.46 ± 3.9	13.36 ± 3.12		<0.001*
SOFA	4.37 ± 4.08	2.58 ± 3.02		<0.001*
APACHE II score	4.37 ± 4.08	2.58 ± 3.02		<0.001*
Creatinine	1.34 ± 2.02	2.4 ± 9.14		0.201
Alkaline phosphatase	171.8 ± 138.1	123.95 ± 104.4		<0.001*
Procalcitonin	10.31 ± 28.14	5.61 ± 15.08		0.103
C-reactive protein	167.34 ± 94.8	82.83 ± 91.3		<0.001*
Days of hospital stay	43.05 ± 31.3	15.58 ± 14.4		<0.001*
Mortality risk	26.14 ± 19.39	17.97 ± 14.8		<0.001*
Outcome	89 (64)	445 (91.6)	6.098	<0.001*
Improvement Death	50 (36)	41 (8.4)

Values are expressed as mean ± SD or n (%).

SOFA, Sequential Organ Failure Assessment score; APACHE, Acute Physiology and Chronic Health Evaluation.

*p-value is less than 0.05.