Table 1.

Baseline clinical, demographic and surgical characteristics of patients undergoing laparoscopic cholecystectomies for which the local anaesthetic bupivacaine was administered via ultrasound-guided transversus abdominis plane block.

Characteristic	Group A n = 30	Group B n = 30
Age, years	47.2 ± 13.0	46.5 ± 11.5
Sex, female/male	15/15	12/18
Body mass index, kg/m2	25.0 ± 1.9	25.8 ± 2.1
ASA physical status, I/II	9/21	14/16
Duration of anaesthesia, min	65.2 ± 18.6	74.5 ± 20.6
Duration of surgery, min	51.7 ± 17.2	62.5 ± 20.8*

Data are presented mean ± SD or n of patients.

^*P = 0.036 compared with group A; Mann–Whitney U-test.

ASA, American Society of Anesthesiologists.