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. 2011 May 30;13(5):724–727. doi: 10.1038/aja.2011.16

Table 2. Patient VAS score and satisfaction scales.

  Group 1 Group 2 P value
VAS scores (mean±s.d.) 0.90±1.09 6.30±2.48 0.001
Patient satisfaction scales (mean±s.d.) 3.23±0.73 2.43±1.10 0.002
Moderate-to-severe pain (n, %) 0 (0%) 42 (83.3% ) <0.001

Abbreviation: VAS, visual analog scale.

Moderate-to-severe pain: VAS≥4.