Comparisons of behavioral results.

Scores of credibility and belief comparison between Group A and Group C, and needle sensation for all four interventions.RA: real acupuncture; SA: sham acupuncture; QB: questions before treatment (How confident are you that this treatment can alleviate your complaint?); QA: questions after treatment (How confident would you be in recommending this treatment to a friend who suffered from the same complaint?).