Table 1 Sonographic characteristics of the identified fibroids during the five ultrasounds.

From: The association between childbirth, breastfeeding, and uterine fibroids: an observational study

Characteristic

PPU (n = 180)

FTU (n = 180)

STU (n = 180)

TTU (n = 180)

PDU (n = 113)

p

Diameter (mm)

22 (15–30)

35 (28–43)

36 (30–42)

37 (30–43)

14 (0–30)

<0.001a

Location

Anterior

62 (34.4)

62 (34.4)

62 (34.4)

62 (34.4)

32 (28.3)

1.000b

Posterior

94 (52.3)

94 (52.3)

94 (52.3)

94 (52.3)

62 (54.9)

Right Lateral

6 (3.3)

6 (3.3)

6 (3.3)

6 (3.3)

5 (4.4)

Left Lateral

9 (5.0)

9 (5.0)

9 (5.0)

9 (5.0)

7 (6.2)

Fundal

9 (5.0)

9 (5.0)

9 (5.0)

9 (5.0)

7 (6.2)

Site

Subserosal

26 (14.5)

26 (14.5)

26 (14.5)

26 (14.5)

17 (15.0)

0.999b

Intramural

154 (85.5)

154 (85.5)

154 (85.5)

154 (85.5)

96 (85.0)

  1. PPU = pre-pregnancy ultrasound; FTU = first-trimester ultrasound; STU = second-trimester ultrasound; TTU = third-trimester ultrasound; PDU = post-delivery ultrasound Data are reported as median (IQR) or n (%) as appropriate.
  2. aKruskal-Wallis one-way analysis of variance.
  3. bChi-squared test.