Rautiainen, RH (2004) Injuries in the Iowa Certified Safe Farm Study.
Country	US
Aim	To assess injury characteristics and risk factors in the Iowa Certified Farm (CSF) program and to evaluate the effectiveness of CSF for reducing injuries.
Target population	Occupation: Crop and animal production, hunting and related service activities
	Industry: A—Agriculture, forestry and fishing
	Setting: 030 Farming and forestry
	Firm size: Unclear/not reported
Study design	RCT with comparison conditions: Alternative type of intervention
	Unit of analysis: Group/organizational level
	Sample size: 152 farms intervention + 164 farms control (1999) (2000: drop‐outs replaced to maintain at least 125 farms in each group) = 316 ‐
Type of intervention	3.1 Multifaceted at the individual level
Evaluation design	Duration of intervention: 3 years
	Duration of follow‐up: 3 = Medium‐term (12–36 months)
	Type of outcome measure: Injury
Study quality	High quality