A randomized study of local anesthesia for pain control during intra-articular corticosteroid injection in children with arthritis

Table 4 Comparison of Faces Pain Scale-Revised (FPS-R) scores from IACI in childhood arthritis between treatment groups by gender

	Male (n = 19)		Female (n = 44)
	EMLA® or Numby® Only (n = 9)	EMLA® or Numby® + Subcutaneous Buffered Lidocaine (n = 10)		EMLA® or Numby® Only (n = 19)	EMLA® or Numby® + Subcutaneous Buffered Lidocaine (n = 25)
	Change in FPS-R score	Change in FPS-R score	P-value	Change in FPS-R score	Change in FPS-R score	P-value
All patients (n = 63)	1.0 (0.0–2.0)	0.5 (0.0–2.0)	0.61	2.0 (2.0–5.0)	0.0 (0.0–2.0)	0.0004*
Oligo-arthritis (n = 49)	2.0 (0.0–4.0)	0.0 (0.0–2.0)	0.16	2.0 (2.0–5.0)	0.0 (−1.0–1.0)	0.0006*

Pain scores are reported as Median (IQR: 25^th-75^th percentiles); Change in FPS-R scores = FPS-R post-procedure – FPS-R baseline; Comparison of the changes in FPS-R scores between treatment groups were examined using Wilcoxon rank sum test. IACI = intra-articular corticosteroid injection. *P < 0.05 was considered statistically significant

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