Zafar, AB (1997) Effect of a comprehensive program to reduce needlestick injuries.
Country	US
Aim	To reduce needlestick injuries (NSIs) and to assess the effectiveness of the interventions.
Target population	Occupation: Human health activities
	Industry: Q—Human health and social work activities
	Setting: 050 Health establishment
	Firm size: 250+(large)
Study design	ITS with comparison conditions: 1. Simple serial measures (No comparison)
	Unit of analysis: Group/organizational level
	Sample size: 499 injuries over a 7 year period, 1500 health care workers.
Type of intervention	3.2 Multifaceted at the group or organizational level
Evaluation design	Duration of intervention: 4 years
	Duration of follow‐up: 4 = Long‐term (>36 months)
	Type of outcome measure: Injury
Study quality	Moderate quality