Journal
EUROPEAN JOURNAL OF INTERNAL MEDICINE
Volume 25, Issue 3, Pages 292-295Publisher
ELSEVIER
DOI: 10.1016/j.ejim.2014.01.018
Keywords
Asymptomatic bacteriuria; Urinary tract infections; Obesity; Iron deficiency anemia
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Background: Few studies examined the risk factors of asymptomatic bacteriuria, showing contradictory results. Our study aimed to examine the association between different clinical and laboratory parameters and asymptomatic bacteriuria in internal medicine patients. Materials and methods: 330 consecutive hospitalized subjects, asymptomatic for urinary tract infections (UTIs), underwent to microscopic examination of urine specimens. 100 subjects were positive for microscopic bacteriuria and were recruited into the study. At the quantitative urine culture 31 subjects of study population were positive while 69 subjects were negative for bacteriuria. Results: The analysis of clinical characteristics showed that the two groups of subjects (positive and negative urine culture for bacteriuria) were significant different (p < 0.05) about obesity (76.7% vs 42% respectively), metabolic syndrome (80.6% vs 44,9%), cholelithiasis (35.5% vs 13,2%) and iron deficiency anemia (80.6% vs 53,6%). The univariate analysis showed that only obesity, cholelithiasis and iron deficiency anemia were positively associated with positive urine culture for bacteriuria (Odds Ratios [OR] = 3.79, p = 0.0003; OR = 2,65, p = 0.0091; OR = 2.63, p = 0.0097; respectively). However, the multivariate analysis by logistic regression showed that only obesity and iron deficiency anemia, independently associated with positive urine culture for bacteriuria (OR = 3.9695, p = 0.0075; OR = 3.1569, p = 0.03420 respectively). Conclusions: This study shows that obesity and iron deficiency anemia are independent risk factors for asymptomatic bacteriuria. (C) 2014 European Federation of Internal Medicine. Published by Elsevier B. V. All rights reserved.
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