TABLE 3.

Results for the measurement of pain in van der Windt et al. (1998) and Rhon et al. (2014).

Variables	van der Windt et al. (1998)				Rhon et al. (2014)
	CSI mean (SD) improvement from baseline	Physiotherapy mean (SD) improvement from baseline	Mean (95% CI) difference between groups	p	CSI Mean (CI)	Physiotherapy Mean (CI)	Difference between groups Mean (CI)	p-value mean difference
Baseline	-	-	-	-	3.3 (2.7 to 3.9)	3.8 (3.2 to 4.5)	0.5 (−1.4 to 0.4)	0.26
3–4 weeks	32 (26)	17 (21)	15 (6 to 24)	<0.05	1.7 (1.1 to 2.4)	1.6 (1.0 to 2.3)	0.1 (−0.8 to 1.0)	0.80
6–7 weeks	58 (28)	32 (29)	26 (15 to 37)	<0.05
13 weeks	66 (28)	47 (33)	19 (7 to 31)	<0.05	2.6 (2.0 to 3.2)	1.8 (1.1 to 2.5)	0.8 (−0.1 to 1.8)	0.077
26 weeks (6 months)	63 (31)	54 (33)	9 (-3 to 22)	>0.05	2.2 (1.6 to 2.8)	1.7 (1.1 to 2.4)	0.5 (−0.4 to 1.4)	0.29
52 weeks (1 year)	70 (24)	59 (30)	11 (1 to 23)	<0.05	2.5 (1.9 to 3.1)	2.1 (1.5 to 2.8)	0.4 (−0.5 to 1.2)	0.42

Source: Authors’ own work

Grey Block van der Windt et al. (1998): did not provide baseline measures as means and standard deviations (SD).

Grey Block Rhon et al. (2014): did not measure pain outcomes at 6–7 weeks.

CSI, corticosteroid injections; SD, standard deviation; CI, confidence interval.