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. 2017 May 8;9(2):136–144. doi: 10.4055/cios.2017.9.2.136

Table 4. Visual Analog Scale (VAS) at Preoperative, Immediate Postoperative, and 12 Months Follow-up.

Variable Preoperative Postoperative At 12 mo
VAS for pain (mean ± standard deviation) 9.00 ± 0.91 4.00 ± 2.00 3.10 ± 1.85
p-value (vs. preoperative) - < 0.001 < 0.001