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Table 2 Early and long-term postoperative pain assessment of included trials using Visual Analogue Scale (VAS)

From: Transabdominal Preperitoneal (TAPP) versus Lichtenstein operation for primary inguinal hernia repair – A systematic review and meta-analysis of randomized controlled trials

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