Randomized controlled trial of bipolar diathermy vs ultrasonic scalpel for closed hemorrhoidectomy

Table 3 Pain scroes for patients undergoing bipolar diathermy (group 1) or ultrasonic scalpel (group 2) (95% CI)

Time point	Group 1 (n = 30)	Group 2 (n = 30)	P
Preoperative	0 (0.1-1.0)	0 (0.0-1.1)	0.303
POD 1	2 (1.8-3.5)	3 (2.6-4.2)	0.135
POD 2	2 (1.8-3.3)	2.5 (1.9-3.3)	0.690
POD 3	2 (1.6-2.3)	2.5 (1.9-3.1)	0.484
POD 4	2 (1.4-2.7)	2 (1.6-3.0)	0.602
POD 5	2 (1.3-3.0)	2 (1.3-2.6)	0.988
POD 6	2 (1.5-2.9)	2 (1.5-2.9)	0.976
POD 7	1 (1.1-2.4)	2 (1.3-2.5)	0.416
POW 3	0 (0.4-1.2)	0 (0.3-1.1)	0.665
POW 6	0 (0.1-0.9)	0 (0.0-0.4)	0.399

POD: postoperative day; POW: postoperative week.