Preprint Review Version 1 Preserved in Portico This version is not peer-reviewed

Systematic Review of the Effects of a Dietary Education Intervention on Individuals with Type 2 Diabetes

Version 1 : Received: 7 July 2021 / Approved: 8 July 2021 / Online: 8 July 2021 (09:57:01 CEST)

A peer-reviewed article of this Preprint also exists.

Kim, J.; Hur, M.-H. The Effects of Dietary Education Interventions on Individuals with Type 2 Diabetes: A Systematic Review and Meta-Analysis. Int. J. Environ. Res. Public Health 2021, 18, 8439. Kim, J.; Hur, M.-H. The Effects of Dietary Education Interventions on Individuals with Type 2 Diabetes: A Systematic Review and Meta-Analysis. Int. J. Environ. Res. Public Health 2021, 18, 8439.

Journal reference: Int. J. Environ. Res. Public Health 2021, 18, 8439
DOI: 10.3390/ijerph18168439

Abstract

As the incidence and prevalence of diabetes increases, intervention through dietary education is becoming more important for diabetes control. This systematic review aimed to confirm the ef-fect of dietary intervention education on diabetes control. The study subjects were type 2 diabet-ic patients, and the main outcome variable was glycosylated hemoglobin level (HbA1c). The target studies were randomized controlled trials. Thirty-six studies were included in the analysis, of which 33 were included in the meta-analysis. The effect size between the dietary education and general intervention, was -0.42 (n=5,639, MD=-0.42; 95% CI -0.53 to -0.31) and was signifi-cantly different (Z=7.73, P<.001). When subgroup analyses were performed following the appli-cation periods, intervention methods, and intervention contents, the mean differences in 4–6-month application, individual education, diet-exercise-psychosocial intervention were -0.51, (n=2,742, 95% CI -0.71 to -0.32), -0.63 (n=627, 95% CI -1.00 to -0.26), and -0.51 (n=3.244, 95% CI -0.71 to -0.32), respectively. Dietary education interventions provided for at least 3 months were highly effective in controlling blood sugar levels. Regarding the education method, individual-ized education was more effective, and for this, contact or non-contact education may be applied. Combining diet, exercise, and psychosocial intervention is more effective than diet education alone.

Keywords

Diabetes mellitus; diet, education; systematic review.

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