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| | Item | Detail |
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| 1. Acupuncture rationale | (1a) Style of acupuncture | Electroacupuncture based on traditional Chinese medicine theory |
| (1b) Reasoning for treatment provided, based on historical context, literature sources, and/or consensus methods, with references where appropriate | Acupuncture points to be used in this study were Baihui (GV20) and Shenting (GV24) located at the head. Based on previous studies [21] and a large number of literature [22, 23], Baihui (GV20) and Shenting (GV24) will be mainly selected as acupuncture points for VCI treatment. |
| (1c) Extent to which treatment was varied | Only EA group will receive electroacupuncture treatment |
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| 2. Details of needling | (2a) Number of needle insertions per subject per session | 2 |
| (2b) Names of points used | Baihui (GV20) and Shenting (GV24) |
| (2c) Depth of insertion, based on a specified unit of measurement | 0.5 inches deep |
| (2d) Response sought | “De qi” sensation |
| (2e) Needle stimulation | Electroacupuncture |
| (2f) Needle retention time | 30 minutes |
| (2g) Needle type | Sterilized stainless steel needle with the 0.3 ∗ 25 mm (Suzhou Medical Supplies Factory Co., Ltd., Jiangsu, China) |
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| 3. Treatment regimen | (3a) Number of treatment sessions | 40 sessions (8 consecutive weeks) |
| (3b) Frequency and duration of treatment sessions | 30 minutes per day, 5 days per week |
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| 4. Other components of treatment | (4a) Details of other interventions administered to the acupuncture group | (a)All participants received routine treatment with essential drugs(b)All participants will be given health education once a week |
| (4b) Setting and context of treatment, including instructions to practitioners and information and explanations to patients | The study will be conducted in the General Hospital of Ningxia Medical University, and all information will be provided to the subjects |
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| 5. Practitioner background | (5) Description of participating acupuncturists | A medicine acupuncture after completing 5 years of Chinese medicine undergraduate course who has more than 5 years of clinical experience |
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| 6. Control or comparator interventions | (6a) Rationale for the control or comparator in the context of the research question, with sources that justify this choice | The control group was not treated with sham acupuncture or placebo acupuncture |
| (6b) Precise description of the control or comparator. If sham acupuncture or any other type of acupuncture-like control is used, provide details as for items 1 to 3 above | None |
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