Table 4.

Guyatt’s effect size per reader per method. Guyatt’s effect size is the mean difference in the treatment group divided by the standard deviation of the change in the placebo group. Effect size > 0.8 is considered large.

MethodReaderGuyatt’s Effect Size
6 DVUA1.7
6 DVUB2.0
6 DVUC1.7
23 DVUB1.8
23 DVUC2.6
  • DVU: discovertebral units.