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. Author manuscript; available in PMC: 2013 May 1.
Published in final edited form as: Am J Infect Control. 2011 Aug 25;40(4):359–364. doi: 10.1016/j.ajic.2011.05.012

Table 2.

The relation between the catheter utilization ratio, the National Healthcare Safety Network (NHSN) catheter-associated urinary tract infection (CAUTI) rate and the proposed population CAUTI Rate

Metric Calculation
NHSN CAUTI rate (Total number of CAUTIs/total catheter-days) ×1,000
Catheter utilization ratio Total catheter-days/ total patient-days
Total patient-days Total catheter-days/ catheter utilization ratio
Population CAUTI Rate (Total number of CAUTIs/ total patient-days) ×10,000 = (Total number of CAUTIs/ total catheter-days) ×catheter utilization ratio ×10,000= NHSN CAUTI rate ×catheter utilization ratio ×10