Assessing the Benefit of a Health Prevention Tool

摘要

Loeppke et al have provided a progress report on their health promotion program.1'2 Although the data presented suggest considerable success, their results warrant a more critical analysis. Only 52% of the workforce began the program and only 24% (2606/10899) completed 1 year. (Only 12% have been included in the analysis at 2 years.) The results should be seen in this context of low ongoing participation and a very high degree of self-selection. The latest report presents data from a subgroup. It is not clear how this group was identified. This is critical to any interpretation.