Individual prevention courses for occupational skin diseases: changes in and relationships between proximal and distal outcomes

BACKGROUND: To treat people with occupational contact dermatitis, the German Accident Prevention and Insurance Association in the Health and Welfare Services offers 2-day individual prevention (IP) seminars. OBJECTIVES: We investigated whether there are short-term and medium-term changes in proximal (e.g. behaviour) and distal (e.g. symptoms) outcomes after an IP seminar, whether changes in proximal outcomes are associated with changes in distal outcomes, and whether subgroups can be identified that benefit in particular. PATIENTS/MATERIALS/METHODS: In a prospective study, 502 participants of 85 IP courses completed the health education impact questionnaire (heiQ™) and skin symptom questionnaire (Skindex-29) at the start of the course, immediately thereafter, and after 6 months. Change was assessed according to standardized effect size. Regression techniques were used to analyse associations between proximal and distal outcomes. RESULTS: After 6 months, participants showed improved self-management skills and preventive behaviour, and less fear of job loss, disease-related symptoms, and emotional distress. Significant associations between proximal and distal outcomes were found. Participants who felt more limited by their skin disease showed greater effects. CONCLUSIONS: The results are consistent with the assumption that IP courses provide a range of benefits for people with occupational contact dermatitis. Changes in distal outcomes may be influenced by changes in proximal outcomes.