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Table 5 Intrauterine hematoma features in women who did and did not have pregnancy loss before 20 weeks of gestation

From: Associations between first-trimester intrauterine hematoma and twin pregnancy outcomes: a retrospective cohort study

Intrauterine hematomas feature

Pregnancy Loss at Less Than 20 wk (n = 34)

No Pregnancy

Loss at Less Than 20 wk (n = 75)

Vanishing twin syndrome at less than 20wk (n = 15)

P value

Volume (cm3)*

1.80 (0.77–6.05)

1.65 (0.64–3.56)

1.61 (0.42–3.47)

0.514

Largest diameter (cm)

2.3 (1.7–3.3)

2.25 (1.65–2.9)

1.95 (1.25–3.1)

0.524

Vaginal bleeding

34 (61.82)

75 (66.96)

15 (62.5)

0.499#

  1. Data are the median (IQR) or n/N (%) unless otherwise specified
  2. *Measured as length x width x height × 0.52
  3. ※Kruskal-Wallis test
  4. #Chi-square test
  5. P < 0.05 indicates statistical significance