Lawrence, L (1997) The effectiveness of a needleless intravenous connection system: An assessment by injury rate and user satisfaction.
Country	US
Aim	To assess impact of needleless intravenous connection system on rate of reported percutaneous injuries from intravenous connections.
Target population	Occupation: hospital workers clinical—nurses
	Industry: Q—Human health and social work activities
	Setting: 050 Health establishment
	Firm size: 250+(large)
Study design	ITS with comparison conditions: 2. Serial measures with internal control
	Unit of analysis: Group/organizational level
	Sample size: Two tertiary care teaching hospitals, one general and one pediatric hospital: 1989–1991:7296 full‐time equivalents (FTE)—1993: 3370 FTE + Pediatric Hospital: 1989–1991: 4320 FTE—1993: 2476 FTE = 17,462/4y = 4365/y
Type of intervention	2.2.4 Engineering controls
Evaluation design	Duration of intervention: Not reported or unclear
	Duration of follow‐up: 2 = Short‐term (≤12 months)
	Type of outcome measure: Injury
Study quality	Low quality