Are simple feedback interventions involving workplace data associated with better working environment and health?: A cluster randomized controlled study among Swedish VDU workers

Objective: To test whether feedback and discussion of ergonomic and psychosocial working environment data during I short session with individual, groups, or supervisors of VDU workers had effects on (1) the quality of implemented modifications in workplace design, working technique, or psychosocial aspects; (2) psychological demands, decision latitude, and social support, (3) comfort during computer work, emotional stress, and prevalence Of musculoskeletal symptoms or eye discomfort. Methods. Thirty-six workgroups from 9 organizations were randomized to 3 feedback conditions (individual, workgroup, supervisor) or control. Follow-up was 6 months after intervention. Questionnaire data aggregated on the workgroup level were used. Results: Effect (positive) on social support was indicated from feedback to Supervisors. Conclusion: Feedback and discussion of ergonomic and psychosocial working environment data with supervisors of white-collar VDU workers may have positive effect on social support measured as a group Characteristic. Sources of potential bias are discussed. (c) 2005 Elsevier Ltd. All rights reserved.