Table 2.

Early and long-term postoperative pain assessment of included trials using Visual Analogue Scale (VAS)

			VAS
Author	Operation	VAS	0–12 h	p	12–24 h	p	24–48 h	p	48–72 h	p
Anadol et al. [13]
	Lichtenstein	100-point	54.12 ± 13.06	<0.005	37.24 ± 11.38	<0.003	17.36 ± 4.52	NS	13.12 ± 5.95	NS
	TAPP		38.96 ± 8.21		20.92 ± 8.73		14.72 ± 7.03		9.44 ± 4.23
Picchio et al. [19]
	Lichtenstein	10-point	N/A	N/A	2.7 (range 1–5)	0.14	1.8 (range 1–4)	<0.03	N/A	N/A
	TAPP				3.1 (range 1–7)		2.3 (range 1–6)
Salma et al. [21]
	Lichtenstein	10-point	6.23 ± 1.87	0.005	N/A	N/A	N/A	N/A	N/A	N/A
	TAPP		4.43 ± 1.59

All values are mean; NS not significant, N/A not available, SD standard deviation