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. Author manuscript; available in PMC: 2013 Sep 1.
Published in final edited form as: J Pain. 2012 Jul 31;13(9):891–900. doi: 10.1016/j.jpain.2012.06.003

Table 3.

Between-subjects “Acceptability Groups” ANOVA POST HOC analysis (VAS = 0–100; n=100)

Main Effect/Post Hoc comparisons F/Mean difference p ES (Cohen)
Accept for Established Treatments F(2,97)= 26.57 P< .001** f = .740
 High Accept > Low Accept 42.40 P< .000** d = 1.386
 High Accept > Mod Accept 12.87 P= .172 d = .485
 Mod Accept > Low Accept 29.53 P< .001** d = 1.121
Accept No Established treatments F(2,97)= 26.69 P< .001** f =.742
 High Accept > Low Accept 53.74 P<. 001** d = 1.343
 High Accept > Mod Accept 20.50 P= .040* d = .755
 Mod Accept > Low Accept 33.24 P<.001** d = .996
Willingness to Participate in RCT F(2,97)= 4.45 P= .014* f = .302
 High Accept > Low Accept 25.48 P= .017 d = .684
 High Accept > Mod Accept 11.08 P= .697 d = .541
 Mod Accept > Low Accept 14.01 P= .154 d = .427
Placebo Effectiveness F(2,97)=19.74 P< .001** f = .638
 High Accept > Low Accept 23.30 P< .001** d = 1.030
 High Accept > Mod Accept 0.82 P= 1.00 d = .045
 Mod Accept > Low Accept 24.11 P< .001** d = 1.106
Negative mood improved pain F(2,97)= 2.38 P= .098 f = .364
 High Accept > Low Accept 13.6 P= .113 d = .538
 High Accept > Mod Accept 6.61 P= .941 d = .305
 Mod Accept > Low Accept 6.86 P= .562 d = .293
Negative mood worsens pain F(2,97)=2.318 P= .104 f = .220
 High Accept > Low Accept 18.29 P= .130 d = .515
 High Accept > Mod Accept 17.16 P= .188 d = .523
 Mod Accept > Low Accept 1.14 P= 1.00 d = .037
Positive mood improves pain F(2,97)= 6.43 P= .002* f = .364
 High Accept > Low Accept 25.94 P= .008* d = .750
 High Accept > Mod Accept 6.37 P= 1.00 d = .232
 Mod Accept > Low Accept 19.57 P= .015* d = .604
Positive mood worsens pain F(2,97)=1.97 P= .145 f = .220
 High Accept > Low Accept 10.86 P= .443 d = .350
 High Accept > Mod Accept 0.05 P= .100 d = .002
 Mod Accept > Low Accept 10.80 P= .226 d = .377
Trust improves pain Improves F(2,97)= 10.24 P< .001** f = .459
 High Accept > Low Accept 32.14 P<. 001** d = 1.034
 High Accept > Mod Accept 17.24 P= .066 d = .732
 Mod Accept > Low Accept 14.90 P=. 038* d = .517
Trust worsens pain F(2,97)= 4.083 P= .020* f = .291
 High Accept > Low Accept 14.77 P= .016* d = .682
 High Accept > Mod Accept 1.42 P= .101 d = .558
 Mod Accept > Low Accept 3.35 P= 1.00 d = .204

Note: F, F Statistic; P, P value; ES, effect size; ηp2, partial eta squared; f, cohens F; d, cohen s d.

*

Indicates significant difference (p < 0.05).

**

Indicates significant difference (p < 0.001).