. 2019 Jul 12;9:10117. doi: 10.1038/s41598-019-46513-0

Table 4.

Comparison of “unchanged” and “regressed” fibroids at the post-delivery evaluation between lactating and non-lactating women, according to the four classed of pre-pregnancy fibroids diameter.

PPU diameter	Ongoing Breastfeeding	No breastfeeding	p
10–20 mm	51/54 (94.4)	26/34 (76.5)	0.03^a
21–30 mm	25/26 (96.2)	7/27 (25.9)	<0.01^a
31–40 mm	10/13 (76.9)	8/12 (66.7)	0.60^a
>41 mm	4/7 (57.1)	3/7 (42.9)	0.45^a

PPU = pre-pregnancy ultrasound.

Data are reported as n (%).

^aChi-squared test.