3.2. The Secondary Outcome Measures
CPSP
Secondary outcome measures were as follows: (1) general information of the patients; (2) the NRS score for rest and activity at 12, 18, and 24 hours as well as 2, 3, and 7 days postoperatively; (3) the Barthel Activities of Daily Living (ADL) score for the activity level at 1The patients were divided into two groups according to whether the NRS-R score was ≥2 on the first day after the operation. The incidence of CPSP in the two groups was followed up at 3, 6, and 9 months after surgery.All patients were interviewed by telephone at 3, 6, and 9 months after surgery to collect postoperative data.