Two-year impact of an educational intervention in primary care on blood glucose control and diabetes knowledge among patients with type 2 diabetes mellitus: a study in rural China.
2021
Background: Type 2 diabetes mellitus is increasing in rural China and should be managed in primary health care, but knowledge is lacking. Educational interventions have been implemented but not followed up long-term.Objective: The study aimed to assess the long-term impact of an educational intervention on patients' diabetes knowledge and fasting blood glucose (FBG) level, and whether these outcomes differed between two rural counties.Methods: The study was nested in an educational intervention project in primary health care in Jiangsu province. Patients with type 2 diabetes mellitus from Huaiyin county and Gaochun county were randomly divided into an intervention group receiving an educational intervention and follow-up visits, and a control group with standard care. Questionnaires and medical records, including FBG level and diabetes knowledge score, were compared, at baseline in 2015 and two follow-ups, in 2016, and 2017, respectively. A paired t-test and two mixed-effects linear regression models were used.Results: The diabetes knowledge score increased in the intervention group in 2016 and in 2017, compared with 2015. The FBG level decreased in 2016 compared with 2015 in the intervention and control groups. Comparing data in 2015 and 2017, there was no significant change in FBG level in the intervention or control group, but the diabetes knowledge score increased in the intervention group both in 2016 and 2017. A significant association between FBG level and the interaction of time and group, suggesting a long-term effect, was only found in Gaochun county in 2017.Conclusion: The educational intervention improved the diabetes knowledge score in the intervention group, while no significant improvement was found in the control group in both year 2016 and 2017. Meanwhile, the intervention had a positive impact on FBG level in the intervention group in 2017. Patients in Gaochun county had better improvement in both diabetes knowledge and controlling FBG level, compared with Huaiyin county.
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