Table 2.

Surveillance Data Collection Methods

	Numerator data collection
	Frequency of reports			Who reviews charts
Hospital	Monthly	Weekly	Daily	IPP	MD	Denominator data collection
A	X			X		For 2010, point prevalence estimates used. Catheter-days calculated by multiplying proportion of patients with central lines by patient-days. Starting in 2011, nursing supervisors check each patient daily for lines and report number to infection prevention.
B, C			X	X		Line-day count is tied to electronic nursing documentation of line maintenance. Summary count made at midnight each night.
D			X	X		Nurses record presence of lines daily in the EMR; data are transmitted electronically to epidemiology.
E		X		X	Xa	Unit managers check every bed each day for the presence of a line.
F	X			X		Device utilization download from analytics program that extracts these data from nursing documentation in EMR.
G			X	X	X	Collected electronically.
H			X	X		Electronic count of line-days from EMR for most units. A new EMR system was implemented in 2010. For units not yet on the new EMR, electronic algorithm used to estimate the number of line-days by looking at orders for central line maintenance and blood draws via a central line. Almost all units are now on the new EMR, with direct electronic reporting of line-days.
I			X	X	Xa	Hand count of line-days on each individual nursing unit.
J			X	X	X	Collected manually by night shift nurse manager on each unit each evening and entered in secure electronic spreadsheet.

Note. EMR, electronic medical record; IPP, infection preventionist; MD, medical doctor.

^aHospital physician epidemiologists review only as needed for cases requiring adjudication, not all cases.