Many studies across the globe prove the validity of hypnosis. One such study documents 178 patients suffering from chronic pain and treated with hypnotherapy between 1981 and 1983. It was reported that 78 %remained pain-free after six months, 47 % after one year and 36.5 % after three years. Another study showed the efficacy of hypnotherapy as compared to psychoanalysis and behavior therapy. After 600 sessions of psychoanalysis, 38% of the patients reported recovery from their conditions, 72 % of those receiving behavior therapy indicated a sense of improvement after 22 sessions; while hypnotherapy produced a 93% success rate after only six sessions.