Table 10:

Patient and Physician Global Impression of Change, SENZA-RCT Study

	Patient Rating			Physician Rating
Global Impression of Changea	10-kHz High-Frequency SCS	Conventional SCS	Differenceb	10-kHz High-Frequency SCS	Conventional SCS	Differenceb
% Who Rated Symptoms Better or A Great Deal Better
12 months	56.8	37.6	19.2	74.1	50.0	24.1
24 months	63.5	36.6	26.9	68.6	48.6	20.0
% Who Rated Symptoms Little Better, Almost the Same, or No Change
12 months	12.4	31.4	−19.0	7.9	23.8	−15.9
24 months	20.0	30.9	−10.9	14.0	25.7	−11.7

Abbreviation: SCS, spinal cord stimulation.

^aGlobal Impression of Change is a 7-point Likert scale: a great deal better, better, moderately better, somewhat better, a little better, almost the same, no change.

^bCrude differences calculated for this health technology assessment.

Source: Kapural et al, 2016.^30,31