TABLE 6.

Incidence of postoperative chronic pain in three groups (3 months after surgery)

	Control (n = 30)	PN‐Dex (n = 31)	i.v.‐Dex (n = 30)	p value
				p a	p b	p c
CPSP (%)	10 (33.3)	3 (9.7)*	2 (6.7) #	0.03	0.02	0.99
NP (%)	9 (30)	2 (6.5)*	1 (3.3) #	0.02	0.01	0.99

Note: p ^a, PN‐Dex group vs. control group; p ^b, i.v.‐Dex group vs. control group; p ^c, PN‐Dex group vs. i.v.‐Dex group.

Abbreviations: CPSP, chronic postsurgical pain; NP, neuropathic pain; Dex, dexamethasone; PN, perineural.

^*The comparison between the PN‐Dex group and the control group was statistically significant (p < 0.05).

^# The comparison between the i.v.‐Dex group and the control group was statistically significant (p < 0.05).