Table 5

Facilitators and barriers identified at the implementation phase

Themes	Facilitators	Barriers
Management and collaboration	Definition of milestones at outset Strategic indicators put in place in business plan Detailed project costs set out from beginning Mixed research methods (surveys, case studies, etc) Minutes/agendas of all meetings Possible risks identified and monitored in advance Data collected throughout scheme Role of external company, sponsor or organisation with own evaluation requirements	Poor coordination Lack of process evaluation
Resources	Infrastructure Availability of data	Lack of funding Lack of personnel Lack of sufficiently trained personnel Lack of infrastructure Time-consuming process Lack of international comparator Lack of routine data collection No data to control for external factors No data to evaluate change in attitudes/awareness Short time frame of activities
Leadership	Support from ministry Evaluation requirements from external organisations
Nature of the intervention	Preceding research (eg, needs assessment during adoption phase)	Challenges regarding accessibility of the target population for monitoring (eg, illiteracy) Diverse groups using intervention
Nature of the injury problem		Nature of injury—low mortality/minor injuries
Analysis and interpretation		Difficulties establishing intervention effectiveness due to complexity Comparability of results Complexities in data treatment for (multiple user types, or data sources) Difficult to transform data for policy making