Epidemiology and biomolecular characterization of carbapenem-resistant <i>klebsiella pneumoniae</i> in an Italian hospital.

Fortunately, however, this increase did not reach statistical significance (0.442 cases/1,000 patient days in 2013 versus 0.513 cases/1,000 patient days in 2014; P>.05), despite the fact that a statistically significant difference (Χ 2 = 16.0481, P < .001) emerged between the percentages of patients classified as being at high infective risk in 2013 (32.00%) and in 2014 (63.89%).

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