A Randomized Clinical Hypnosis Pilot Study: Improvements in Self-Reported Pain Impact in Adults with Sickle Cell Disease

Table 7

Summary of final repeated-measures mixed models of the effect of hypnosis.

Variable	Group		Time		Grouptime
	F test	value	F test	value	F test	value
VAS	0.32	0.58	1.83	0.17	0.09	0.92
PIQ	0.17	0.68	6.00	0.005	0.68	0.51
BDI	0.21	0.65	2.02	0.14	0.41	0.67
STAI total	0.80	0.38	0.03	0.98	1.45	0.25
STAI-state	0.57	0.46	0.17	0.84	0.60	0.55
STAI-trait	0.95	0.34	0.93	0.4	2.77	0.07
CSQ	0.84	0.37	0.62	0.54	0.77	0.47
PSQI	0.05	0.82	3.47	0.04	0.56	0.57

Linear mixed models for repeated measures were used to test the hypnosis effect between the two groups over the three time points (baseline, week 5, and week 12). First-order autoregressive covariance structure was used in all models. VAS: Visual Analog Scale; PIQ: Pain Impact Questionnaire; BDI: Beck’s Depression Inventory; STAI: Speilberger’s State-Trait Anxiety Inventory; CSQ: Coping Strategies Questionnaire; PSQI: Pittsburgh Sleep Quality Index.