Process evaluation of a worksite social and physical environmental intervention.

Objective: To evaluate the process of implementation of a social and physical environmental intervention and to explore differences regarding this process between both interventions.

Methods: Context, recruitment, dose delivered, fidelity, reach, dose received, satisfaction, and implementation barriers were investigated.

Results: Reach for the social and physical environmental interventions ranged from 45% to 76%. Mean satisfaction for the social environmental intervention was 6.0 and for the physical environmental intervention was 7.0. Generally, the results were higher for team leaders than for employees. Furthermore, the implementation of the physical intervention was better at the departments that additionally received the social intervention.

Conclusion: Both interventions were better implemented on the level of the team leader than that of the employees. Furthermore, the combined interventions received higher evaluation scores. To increase satisfaction and participation, attention should be paid to both employees and team leaders during implementation.