Acupuncture for chronic atrophic gastritis with epigastric discomfort: a multicenter randomized controlled clinical trial

INTERVENTION: Acupuncture Group:Basic treatment+health education+acupuncture;Sham Acupuncture Group:Basic treatment+health education+sham acupuncture; CONDITION: chronic atrophic gastritis PRIMARY OUTCOME: Abdominal pain and bloating symptom relief rate; SECONDARY OUTCOME: Overall symptom score;Pepsinogen?, ?;Gastrin‐17;Operative link on gastritis assessment;Operative link on gastric intestinal metaplasia assessment;Self‐rating Anxiety Scale;Self‐rating Depression Scale;12‐item Short‐form Health Survey;Safety assessment; INCLUSION CRITERIA: 1. Meet the diagnostic criteria for chronic atrophic gastritis; 2. Present with one or both of the discomfort symptoms of abdominal pain or bloating in the past week, and one or both symptoms are at least moderately severe (overall symptom score >=4); 3. Aged 18‐75 years, no gender limit; 4. Understand and agree to participate in this study and sign the informed consent.