Is There a Place for Spinal Cord Stimulation in the Management of Patients with Multiple Sclerosis? A Systematic Review of the Literature

Table 1

Studies included in the pooled statistical analysis.

Author/year	Patients submitted to stimulation trial	Patients with a definitive implant	Type of the study	Follow-up (months)
Rosen and Barsoum (1979) [8]	9	9	Retrospective	6–37
Young and Goodman (1979) [9]	23	20	Retrospective	32
Illis et al. (1980) [10]	19	10	Retrospective	24
Sigfried et al. (1981) [11]	111	37	Retrospective	12–70
Cook et al. (1981) [12]	192	204 (192 posttrial + 12 de novo)	Retrospective	12
Waltz et al. (1987) [13]	None	91 (de novo)	Retrospective	6–120
Kumar et al. (2006) [14]	19	17	Retrospective	97.6