Table I.

Demographics, surgical procedure, and body mass index in PCA and non-PCA group

Parameter		With PCA (n = 28)	Without PCA (n = 33)	P-value
Gender	Male	32.1% (9)	9.1% (3)	0.024*
	Female	67.9% (19)	90.9% (30)
Mean age [years] (min.–max.)		47.29 ±10.78 (27–64)	43.58 ±11.33 (20–63)	0.198
Surgical procedure	Sleeve gastrectomy	57.1% (16)	72.7% (24)	0.202
	Gastric bypass	42.9% (12)	27.3% (9)
Mean BMI [kg/m²] (min.–max.)		48.78 ±8.93 (35.3–67.7)	50.82 ±8.26 (35.0–73.6)	0.356

PCA – patient-controlled analgesia, BMI – body mass index,

^*significant with p < 0.05.