Table 2:

Urine cultures sent, antibiotic prescriptions and amount of follow-up time across the study phases for the 10 long-term care homes that completed implementation of the program

Variable	Total	Phase			IRR, baseline v. intervention (95% CI)

		Baseline	Implementation	Intervention	Unadjusted	Adjusted
Outcome, no. per 1000 resident-days

Urine cultures sent	2.64	3.20	2.35	2.09	0.70 (0.61–0.79)	0.72 (0.63–0.82)

Urinary antibiotic prescriptions	1.19	1.52	1.09	0.83	0.59 (0.46–0.72)	0.60 (0.47–0.74)

Total antibiotic prescriptions	3.20	3.85	2.82	2.60	0.74 (0.66–0.82)	0.74 (0.65–0.83)

Follow-up

Home-months,^† no.	164	70	42	52	NA	NA

Resident-days,^‡ no. (thousands)	793.2	344.8	198.2	250.2	NA	NA

Note: CI = confidence interval, IRR = incidence rate ratio, NA = not applicable.
↵† Months that each home participated in a given period of the study, summed across all homes.
↵‡ Days that each resident stayed at a home within a given period, summed across all residents.