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. Author manuscript; available in PMC: 2013 Feb 1.
Published in final edited form as: Headache. 2012 Feb;52(2):244–261. doi: 10.1111/j.1526-4610.2011.02031.x

Table 3.

Comparison of study results with IMMPACT criteria

Experimental Control
Physical Functioning1 MIDAS 12.8% decrease 13.0% decrease
Emotional Functioning1 DASS Depression 12.5% decrease 0.0% change
DASS Anxiety 7.7% decrease 2.4% increase
DASS Stress 4.1% decrease 0.7% decrease
Global Rating of Improvement2 Very Much Improved 1(1.5) 2(2.3)
Much Improved 16(23.5) 10(11.5)
Minimally Improved 31(45.6) 20(23.0)
No Change 20(29.4) 50(57.5)
Minimally Worse 0(0.0) 4(4.6)
Much Worse 0(0.0) 0(0.0)
Very Much Worse 0(0.0) 1(1.2)
Pain Intensity Not Measured -- --
1

Calculated as: [(Baseline Group Average − Post-Intervention Group Average)/Baseline Group Average]*100

2

Participants who endorsed each category, given as n(%)