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Number of Adverse Events
| Adverse Event | Electroacupuncture (626 Visits) | Sham (616 Visits) | Usual Care (231 Visits) | Total |
|---|---|---|---|---|
| Overall | 42 | 27 | 37 | 106 |
| Serious adverse event | 0 | 0 | 0 | 0 |
| Upper respiratory infection | 24 (57.14%) | 13 (48.15%) | 25 (67.57%) | 62 (58.49%) |
| Dyspepsia | 7 (16.67%) | 4 (14.81%) | 4 (10.81%) | 15 (14.15%) |
| Headache | 1 (2.38%) | 4 (14.81%) | 0 | 5 (4.72%) |
| Low back pain | 1 (2.38%) | 0 | 1 (2.70%) | 2 (1.89%) |
| Pruritus | 1 (2.38%) | 1 (3.70%) | 0 | 2 (1.89%) |
| Others | 8 (19.05%) | 5 (18.52%) | 7 (18.92%) | 20 (18.87%) |
