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.

Funding. W.C.K. is supported by the Intramural Research Program of the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK). R.T.A. receives funding for diabetes prevention research from NIDDK (R18DK079855) and Centers for Disease Control and Prevention (U58DP002718), and he is supported by the Clinical and Translational Science Awards Program under UL1TR000150.

Duality of Interest. No potential conflicts of interest relevant to this article were reported.

1.
Jiang
L
,
Manson
SM
,
Beals
J
, et al
.
Translating the Diabetes Prevention Program into American Indian and Alaska Native communities: results from the Special Diabetes Program for Indians Diabetes Prevention demonstration project
.
Diabetes Care
2013
;
36
:
2027
2034
2.
Jiang
L
,
Manson
SM
,
Beals
J
, et al
. Comment on Knowler et al. Preventing diabetes in American Indian communities. Diabetes Care 2013;36:1820–1822 (Letter). Diabetes Care
2014
;
37
:e35–e36. DOI: 10.2337/dc13-1996
3.
Knowler
WC
,
Ackermann
RT
.
Preventing diabetes in American Indian communities
.
Diabetes Care
2013
;
36
:
1820
1822
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