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Objective: Transtheoretical model (TTM) is one of the most commonly used methods for behavioral change. This Quasi-experimental research with a one-group pretest-posttest design aimed to examine the effects of a Transtheoretical model-based Intervention on stroke prevention behaviors, systolic blood pressure (SBP), diastolic blood pressure (DBP) and body mass index (BMI) among people at risk in community of Nakhon Phanom province. Methods: Twenty participants were selected by a purposive sampling method. The eligible participants were those with aged 55 years or older, diagnosed with chronic illness, without history of stroke or transient ischemic attack (TIA), with Thai Cardio-Vascular (CV) risk of 10% or higher, classified in the stage of “not ready for change” and willing to participate in the research project. The participants received an intervention from June to November 2020 once a week. The intervention was divided into 4 activity sessions and one booster session on week 16. The intervention was made commensurate with the constructs of processes of change and appropriate content. The outcomes were evaluated at six months after the intervention. The data were collected by a demographic data form, a stroke prevention behavior questionnaire, blood pressure level and BMI record. The data were analyzed using descriptive statistics and t-test statistics. Results: After completion of the intervention, the results showed that the mean stroke prevention behavior scores of the participants were statistically significantly greater than before attending the intervention (p < .001). SBP level was also lower than that before intervention with statistical significance (p < .01). Mean DBP and BMI of the participants after the intervention decreased without statistical significance. Conclusion: The Transtheoretical model-based Intervention showed effectiveness in stroke prevention of people at risk. The findings of this study are of importance for further practice in that the proposed intervention may be
applied for stroke preventive care.
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