Patients’ characteristics between the intrathecal morphine (ITM) group and erector spinae plane (ESP) block group
| Parameter | ITM (n=27) | ESP (n=27) | P value |
| Age (years) | 36.5±10.5 | 32.9±12.4 | 0.253 |
| Sex (male/female) | 20/7 | 12/15 | 0.051 |
| Body mass index (kg/m2) | 23.8±2.6 | 23.0±2.8 | 0.293 |
| ASA physical status (I/II) | 21/6 | 20/7 | 0.202 |
| Duration of surgery (hours) | 3.8±0.5 | 4.1±0.9 | 0.664 |
| Duration of PACU stay (minutes) | 63.7±10.5 | 64.4±11.7 | 0.817 |
Values are mean±SDs or number.
ASA, American Society of Anesthesiologists; PACU, postanesthetic care unit.