Comparison 2. Hypnotherapy (including guided imagery) versus control.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Treatment success: postintervention	4	146	Odds Ratio (M‐H, Random, 95% CI)	6.78 [2.41, 19.07]
1.1 Active control or usual care	2	74	Odds Ratio (M‐H, Random, 95% CI)	10.51 [2.88, 38.33]
1.2 Wait‐list control	2	72	Odds Ratio (M‐H, Random, 95% CI)	5.77 [0.64, 52.05]
2 Pain intensity: postintervention	4	146	Std. Mean Difference (IV, Random, 95% CI)	‐1.01 [‐1.41, ‐0.61]
2.1 Active control or usual care	2	74	Std. Mean Difference (IV, Random, 95% CI)	‐1.00 [‐1.90, ‐0.11]
2.2 Wait‐list control	2	72	Std. Mean Difference (IV, Random, 95% CI)	‐0.95 [‐1.44, ‐0.46]
3 Pain frequency: postintervention	4	146	Std. Mean Difference (IV, Random, 95% CI)	‐1.28 [‐1.84, ‐0.72]
3.1 Active control or usual care	2	74	Std. Mean Difference (IV, Random, 95% CI)	‐1.74 [‐2.29, ‐1.19]
3.2 Wait‐list control	2	72	Std. Mean Difference (IV, Random, 95% CI)	‐0.87 [‐1.38, ‐0.36]