Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Tinnitus loudness
RCT	54 people In review	Change in mean tinnitus loudness score (assessed using a pooled visual analogue score; change from baseline) From 78.5 to 74.1 with acupuncture (25 sessions of 30 minutes over 2 months) From 76.5 to 77.5 with sham acupuncture (superficial penetration at random, non-acupuncture points)	Reported as not significant P value not reported		Not significant
Overall symptoms of tinnitus
RCT Crossover design	14 people In review	Proportion of people with subjective improvement in tinnitus (measured by verbal description, tinnitus matching, and visual analogue scale for tinnitus loudness) after one session of treatment 5/14 (36%) with acupuncture 0/14 (0%) with sham acupuncture	P <0.05	Effect size not calculated	acupuncture
RCT Crossover design	20 people In review	Improvement in subjective tinnitus severity (measured using a pooled visual analogue score) 3 weeks with acupuncture with placebo Absolute results not reported	P = 0.22		Not significant
RCT	54 people In review	Change in mean tinnitus awareness (assessed using a pooled visual analogue score; change from baseline) From 69.2 to 64.5 with acupuncture (25 sessions of 30 minutes over 2 months) From 65.1 to 66.5 with sham acupuncture (superficial penetration at random, non-acupuncture points)	Reported as not significant P value not reported		Not significant