Table 4. The NRS results of repeated-measures analyses of variance (ANOVA) and planned comparisons.

Variable	Main effects and interactions	F	df	p (power)	ƞ2	Planned comparisons		F	df	p (power)	ƞ2
Pain intensity						Placebo groupa	Placebo vs control ratings	30.18	1, 39	0.001 (0.99)	0.44
	Rating	0.04	1, 39	0.85 (0.08)	0.001	Nocebo groupa	Nocebo vs control ratings	21.95	1, 39	0.001 (0.99)	0.36
	Experimental condition	0.18	2, 39	0.84 (0.20)	0.009	Control groupa	Orange-control vs blue-control ratings	0.24	1, 39	0.63 (0.24)	0.01
	Experimental condition × Rating	26.17	2, 39	0.0001 (0.99)	0.57	Difference between placebo/nocebo vs control stimulib	Placebo vs control group	17.87	1, 39	0.001 (0.99)	0.31
							Nocebo vs control group	8.82	1, 39	0.005 (0.99)	0.18
Expectancy						Placebo groupa	Placebo vs control ratings	1.67	1, 39	0.20 (0.84)	0.04
	Rating	0.004	1, 39	0.95 (0.05)	0.001	Nocebo groupa	Nocebo vs control ratings	3.76	1, 39	0.06 (0.78)	0.09
	Experimental condition	0.02	2, 39	0.98 (0.05)	0.001	Control groupa	Orange-control vs blue-control ratings	0.56	1, 39	0.46 (0.70)	0.01
	Experimental condition × Rating	3.00	2, 39	0.0615 (0.99)	0.13	Difference between placebo/nocebo vs control stimulib	Placebo vs control group	0.15	1, 39	0.71 (0.23)	0.01
							Nocebo vs control group	3.62	1, 39	0.06 (0.38)	0.09
Fear						Placebo groupa	Placebo vs control ratings	0.63	1, 39	0.43 (0.47)	0.02
	Rating	0.11	1, 39	0.75 (0.29)	0.003	Nocebo groupa	Nocebo vs control ratings	3.30	1, 39	0.08 (0.70)	0.08
	Experimental condition	2.90	2, 39	0.07 (0.99)	0.13	Control groupa	Orange-control vs blue-control ratings	0.21	1, 39	0.65 (0.55)	0.01
	Experimental condition × Rating	2.02	2, 39	0.15 (0.99)	0.09	Difference between placebo/nocebo vs control stimulib	Placebo vs control group	0.06	1, 39	0.81 (0.14)	0.001
							Nocebo vs control group	2.58	1, 39	0.12 (0.45)	0.06

^a Within-group comparisons.

^b Between-group comparisons.