Efficacy and Safety of Electroacupuncture on Treating the First Episode of Mild to Moderate Depression

Patients will be recruited from the outpatient clinics in Shanghai Municipal Hospital and Shanghai Mental Health Center by Wechat and posters. A total of 204 eligible patients will be randomly allocated to two groups by a randomized block design: the electroacupuncture (EA) group (receiving EA treatment and taking the placebo drugs), and the antidepressants group (receiving sham acupuncture and taking the escitalopram ). After a one-week baseline evalauation, participants will enter a 9-month observation period in this trial, with a 3-month intervention period and a 6-month follow-up period. The interventiuon period will last for 12 weeks, with 3 sessions of real or sham acupuncture treatment per week for the first 8 weeks, and 2 sessions per week for the remaining 4 weeks. The escitalopram or the placebo will be given to the patients at a set time once a week during the 12-week intervention period, with daily oral dose of 10mg or up to 20mg as the maximum dose. Excperts in the Shanghai Mental Health Center will help the participants to adjust the drug dosage during the intervention period. The primary outcome is the 17-item Hamilton Rating Depression Sclae (HRDS-17) at week 12. The secondary outcomes include the recovery rate and the remission rate of depression, the Patient Health Questionnaire(PHQ-9) and the Medical Outcomes Study 36-Item Short Form (SF-36). Adverse effects will be assessed by the Treatment Emergent Symptom Scale through the trial. The software SPSS Version 24.0 for Windows will be used to do the data analysis. All statistical analyses will be based on the intention-to-treat (ITT) population of all randomly assigned patients, with a 2-sided significance level of less than 0.05.