Table 1.

Randomized controlled trials of hypnosis treatment for severe functional bowel disorders

Authors & yr	No. of patients	Control treatment	Positive outcome	Follow-up (mo)
A: Irritable bowel syndrome
Whorwell et al (1984)	30	Psychotherapy plus Placebo Pill	Hypnosis 100% P < 0.0001	12
Galovski & Blanchard (1998)	11	Waiting List	Hypnosis 82% P = 0.016	2
Palsson et al (2002)	24	Waiting List	Hypnosis 87% P = 0.002	10
B: Functional Dyspepsia
Calvert et al (2002)	126	Psychotherapy plus Placebo Pill or Ranitidine 300 mg daily	Hypnosis 73% vs Placebo P < 0.02 vs Ranitidine P < 0.01	14
C: Non-cardiac chest pain
Jones et al (2006)	28	Psychotherapy plus Placebo Pill	Hypnosis 80% P = 0.008	4

Note: Randomized controlled studies run in primary care are not reported for different patient population.