Use of Online Collaborative Case Study Modules for Obesity Education.

Nutrition curricula need to comprehensively address obesity management. Course time constraints may limit in-depth coverage. Added online case studies can provide experiential learning and enhance coverage of learning objectives. Online collaborative case-based learning modules (CBLM) on obesity management were tested in four nutrition/dietetics classes. Facilitated CBLMs, based on constructivism, included reflective essays, discussion boards, group activities, and self-evaluation of learning. Students completed pretests one week prior to and posttests one week after modules. CBLM information and activities were released over three weeks, allowing practice of skills over time. This study presents data from an upper level dietetics class. We tested the hypothesis that a CBLM would have a greater impact on students' obesity knowledge and skills than a standard case study. Students were stratified based on first exam performance and randomized to groups of 5-6 students to complete the CBLM or a standard case study focused on nutrition assessment of obesity. Forty-five students completed pretests and posttests. Independent t-tests revealed a greater mean increase in scores for CBLM than standard group (+7.9 and -0.6%, respectively,  P  = 0.03). Two-way ANOVA showed that students with below-mean pretest scores had a greater mean score increase with CBLM compared to a standard case study (+19.6 vs. +3.5%,  P  <0.001). There was no significant difference between standard and CBLM delivery among students with above-mean pretest scores. In summary, a CBLM increased knowledge and skills of nutrition students compared to a standard case study.