Table 2. Postoperative pain condition of all patients (N=236).

Postoperative condition	n (%)
PCIA, patient-controlled intravenous analgesia; IQR, interquartile range.
Postoperative pain score >3	62 (26.3)
PCIA press times [median (IQR)]	6 (2−16)
Usage of additional analgesic drugs	66 (28.0)
Occurrence of postoperative pain	83 (35.2)