Table 5.

Mean difference in pain intensity between baseline and follow-up, by category of the effect of stimulation.

Pain intensity
EoS category	N	Mean difference (%)	95% CI lower (%)	95% CI upper (%)
Freedom from pain	7	−91.5	−100.7	−82.4
Considerable pain relief	49	−66.7	−77.5	−55.9
Acceptable pain relief	82	−18.4	−30.8	−6.0
Some pain relief	98	8.6	−17.2	34.4
No pain relief/Worsened pain	8	−7.5	−18.1	3.1
All groups	244	−21.3	−32.9	−9.6

Data available for analysis in 244 of 411 patients.

CI, confidence interval; Eos, effect of stimulation, a 6-level, categorical, patient-reported, outcome measurement to assess the global effect of the implanted neurostimulation system at follow-up.