Table 4.

Breast duct width of patients in the three groups before and after treatment (mm)

Groups	Before treatment	After treatment		P
		1-year	2 years	1-year after versus before	2 years after versus before
A	1.07 ± 0.19	1.02 ± 0.18	0.98 ± 0.21	0.336	0.060
B	0.99 ± 0.14	0.96 ± 0.22	0.90 ± 0.18	0.534	0.024
C	1.07 ± 0.20	1.02 ± 0.17	0.91 ± 0.19	0.329	0.002