Clinical efficacy study of the IBS® (Intergrated Bigatti Shaver) Tissue Removal Device in the treatment of endometrial polyps

Table 1 IBS vs. Cold knife group in general data

Variable	IBS	Cold knife	t/Z value	p value
Cases, N	100	102
Age(years)	39.61 ± 10.283	37.30 ± 9.136	1.686	0.093^a
BMI	22.663 ± 3.3924	22.320 ± 3.3004	0.729	0.467^a
Pregnancy	2(1,2)	2(1,3)	-0.242	0.809^b
Miscarriage	0.5(0,1)	0(0,1)	-0.430	0.667^b
Previous intrauterine operation	1(0,2)	1(0,2)	-0.316	0.752^b
Polyp size(cm)	1(1,1.5)	1(0.8,1)	-1.862	0.063^b

IBS Intergrated Bigatti Shaver, BMI Body Mass Index, cm Centimeters, a t-test, b rank-sum test

ISSN: 1477-7819