Table 1 Maternal characteristics based on the presence or absence of SCH (n = 1144).

From: Association between first-trimester subchorionic hematoma and pregnancy loss before 20 weeks of gestation in singleton pregnancies

Characteristics

SCH ( n = 559)

No SCH (n = 585)

P-value

Age, y

29.4 ± 4.19

29.8 ± 4.59

0.152

Basal BMI

21.6 ± 3.32

21.5 ± 3.22

0.875

Primipara, n

327(58.5%)

353(60.3%)

0.525

IVF, n

8(1.4%)

18(3.1%)

0.062

Prior miscarriage

234(41.9%)

258(44.1%)

0.444

Prior cesarean delivery

79(14.1%)

94(16.1%)

0.361

Intramural leiomyomas ≥ 4 cm

13(2.3%)

8(1.4%)

0.228

Prior preterm delivery

6(1.1%)

2(0.3%)

0.138

Vaginal bleeding

213(38.1%)

136(23.2%)

< 0.001

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