Table 2.

Pain Score Sub‐Analysis in CRPS‐I, Causalgia, and FBSS Subjects.

Study	N (at 12 months follow‐up)	Overall pain at baseline	Overall pain at 12 months	Responder rates
	Causalgia
Liem et al.27	4	7.3 ± 1.0	4.0 ± 3.4
Deer et al.23	25	7.3 ± 2.0	1.9 ± 2.3
Morgalla et al.28	25	8.4 ± 1.0	3.8 ± 1.1
Morgalla et al.29	40	8.3 ± 0.9	4.0 ± 0.82
Huygen et al.24	10	7.0 ± 1.6	4.0 ± 2.5
	104	8.0 ± 1.2*	3.4 ± 1.5*	68%
	CRPS‐I
Liem et al.27	7	7.7 ± 1.0	2.7 ± 3.3
Deer et al.23	30	7.6 ± 1.4	2.2 ± 2.3
Huygen et al.24	9	7.8 ± 1.7	5.0 ± 2.8
	46	7.7 ± 1.4*	2.8 ± 2.6*	71%
	FBSS and CLBP
Liem et al.27	8	8.2 ± 0.97	4.8 ± 3.2
Huygen et al.24	22	7.3 ± 2.6	4.5 ± 2.7
Kallewaard et al.25	14	7.0 ± 1.4	2.3 ± 2.1
Kallewaard et al.26	9	7.9 ± 1.1	2.4 ± 2.9
	53	7.5 ± 1.8*	3.6 ± 2.8*	55%

^* Weighted mean and standard deviation.