An audit of acupuncture for pain across almost 6000 patients who received the treatment at a specialist pain clinic in Spain over a nine year period, revealed an average success rate of 79.7%. For the audit, “success” was defined as an improvement of at least 50% in five factors: pain intensity, pain frequency, consumption of painkillers, level of incapacity, and sleep disturbance. The highest success rate (93%) was achieved in patients with headaches. The authors conclude acupuncture is effective, carries with it no severe adverse events, and considerably reduces the consumption of analgesic and anti-inflammatory drugs.
(Effectiveness of acupuncture and related techniques in treating non-oncological pain in primary healthcare-an audit. Acupuncture in Medicine, June 2007.)
Dutch researchers have found that the most optimistic participants among a group of 545 men, aged 64 to 84, were 50% less likely to die from cardiovascular causes during a 15 year study. 
A systematic review of the evidence for the effectiveness of acupuncture treatment of anxiety, has been published by London’s University of Westminster. In all, twelve controlled trials were found, and all had positive findings. The authors conclude the results are promising, and recommend further research.