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. 2021 Jan 25;162(8):2237–2245. doi: 10.1097/j.pain.0000000000002211

Figure 2.

Figure 2.

Within-group comparisons of pain intensity ratings. Black bars represent significant within-group effects with error bars indicating SDs. Notes. * P < 0.05; ** P < 0.01; *** P < 0.001; Ctrl—control group (groups 13-15); 1—placebo conditioning; 2—nocebo conditioning; 3—placebo suggestion; 4—nocebo suggestion; 5—placebo suggestion after placebo conditioning; 6—nocebo suggestion after nocebo conditioning; 7—nocebo suggestion after placebo conditioning; 8—placebo suggestion after nocebo conditioning; 9—placebo suggestion before placebo conditioning; 10—nocebo suggestion before nocebo conditioning; 11—placebo suggestion before nocebo conditioning; and 12—nocebo suggestion before placebo conditioning.