caa a22 4500 388034610 CHVBK 20180307125000.0 cr unu---uuuuu 161130e199801 xx s 000 0 eng 10.1086/647703 doi S0195941700000102 pii (NATIONALLICENCE)cambridge-10.1086/647703 Use of an Estimation Method to Derive an Appropriate Denominator to Calculate Central Venous Catheter-Associated Bloodstream Infection Rates [Elektronische Daten] An outbreak investigation was conducted to determine if an increase in bloodstream infections (BSIs) in patients with central venous catheters (CVC) had occurred. Because other methods of obtaining CVC days were not feasible, we used an estimation method based on a random 5% sample of medical records to determine the proportion of days that a CVC was present for each of three patient units. This calculated ratio was used to estimate the total CVC days for each unit. A cohort study was conducted in which the BSI rates before and during needleless device use were compared. This article describes the methods used to calculate this estimated denominator and discusses the need for such a denominator to be used by infection control practitioners when prospective collection of CVC days is not possible. Copyright © The Society for Healthcare Epidemiology of America 1998 Cookson Susan Temporado Hospital Infections Program, Indiana State University Medical Center, Indianapolis, Indiana Ihrig Melanie Hospital Infections Program, Indiana State University Medical Center, Indianapolis, Indiana O'Mara Edward M. Centers for Disease Control and Prevention, Atlanta, Georgia; the Division of Infectious Diseases, Indiana State University Medical Center, Indianapolis, Indiana Hartstein Alan I. Centers for Disease Control and Prevention, Atlanta, Georgia; the Division of Infectious Diseases, Indiana State University Medical Center, Indianapolis, Indiana Jarvis William R. Hospital Infections Program, Indiana State University Medical Center, Indianapolis, Indiana Infection Control & Hospital Epidemiology Cambridge University Press 19/1(1998-01), 28-31 0899-823X 19:1<28 1998 19 ICE https://doi.org/10.1086/647703 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1086/647703 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Cookson Susan Temporado Hospital Infections Program, Indiana State University Medical Center, Indianapolis, Indiana NATIONALLICENCE 700 1- Ihrig Melanie Hospital Infections Program, Indiana State University Medical Center, Indianapolis, Indiana NATIONALLICENCE 700 1- O'Mara Edward M. Centers for Disease Control and Prevention, Atlanta, Georgia; the Division of Infectious Diseases, Indiana State University Medical Center, Indianapolis, Indiana NATIONALLICENCE 700 1- Hartstein Alan I. Centers for Disease Control and Prevention, Atlanta, Georgia; the Division of Infectious Diseases, Indiana State University Medical Center, Indianapolis, Indiana NATIONALLICENCE 700 1- Jarvis William R. Hospital Infections Program, Indiana State University Medical Center, Indianapolis, Indiana NATIONALLICENCE 773 0- Infection Control & Hospital Epidemiology Cambridge University Press 19/1(1998-01), 28-31 0899-823X 19:1<28 1998 19 ICE CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge