There were some limitations in this study. Due to the crosssectional
design, we are not able to determine whether the
labeling system led to lower-fat diets. Survey studies often
are subject to selection bias, whereby soldiers who were
willing to complete the survey differ in characteristics such as
healthier lifestyle or diet from those who do not choose to
participate; nevertheless, this would not affect comparisons
among label users and nonusers who completed the survey.