Table 2.

Characteristics of the participants

ID	Age range (years)	Type of surgery	Cancer stage
				1	60–64	TM/SLNB	1A
2	55–59	TM/SLNB	0
3	50–54	TM/SLNB	2A
4	35–39	TM/ALND	3A
5	55–59	TM/ALND	1A
6	55–59	TM/ALND	2B
7	65–69	PM/SLNB	1A
8	50–54	PM/SLNB	1A
9	40–44	PM/SLNB	1A
10	45–49	PM/ALND	2A
11	50–54	PM/ALND	1A
12	55–59	PM/ALND	0
13	60–64	PM/SLNB	0
14	65–69	PM/SLNB	1A
15	60–64	PM/SLNB	1A
16	45–49	PM/SLNB	1A
17	35–39	PM/SLNB	0
18	60–64	PM/SLNB	1A
19	60–64	PM/ALND	1B
20	55–59	TM/SLNB	1A
21	65–69	TM/SLNB	1A
22	50–54	TM/SLNB	1A
23	65–69	TM/SLNB	0
24	60–64	TM/SLNB	1A
25	40–44	TM/SLNB	0
26	60–64	TM/ALND	1A
27	65–69	TM/SLNB	1A
28	50–54	PM/ALND	2A
29	60–64	PM/ALND	3A
30	55–59	TM/SLNB	1A
31	55–59	TM/ALND	2B
32	35–39	PM/ALND	2A
33	40–44	PM/SLNB	1A

ALND, axillary lymph node dissection; N, no; PM, partial mastectomy; SLNB, sentinel lymph node biopsy; TM, total mastectomy; Y, yes.