Thank you for the opportunity to comment again on the article by Jiang et al. (1) and their response (2) to our previous commentary (3). As we wrote previously, their article describes an important implementation of diabetes prevention services in American Indian communities. Although this translational program was not a randomized clinical trial designed to test the effectiveness of the program, weight change in the participants can be measured without a comparison group. We thank the authors for now providing weight change results (2) and pointing out that weight change could not be derived from the original published data. We believe that weight change data are essential in interpreting intervention programs for prevention of type 2 diabetes. Jiang et al. are again to be congratulated for carrying out an important and difficult prevention program.