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Table 1 Patients’ characteristics (n = 252)

From: Success rate to complete optimal 20 + 2 ISUOG planes for foetal ultrasonographic structural screening during early second trimester pregnancy in Thailand

 

GA < 20 weeks

(n = 126)

GA ≥ 20 weeks

(n = 126)

Overall

(252)

P-value

Age (years)

   

0.892

Median (interquartile range)

29 (23–33)

28.5 (23–32.5)

29 (23–33)

Race, n (%)

   

0.593

Thai

106 (49.3%)

109 (50.7%)

215

Other

20 (54.1%)

17 (45.9%)

37

BMI (kg/m2)

   

0.656

Median (interquartile range)

23.8 (21.4–26.7)

23.7 (20.8–27.1)

23.8 (21–26.9)

Gravid, n (%)

   

0.240

Nulligravida (G = 1)

51 (54.8%)

42 (45.2%)

93

Multigravida (G ≥ 2)

75 (47.2%)

84 (52.8%)

159

Parity, n (%)

   

0.253

Nulliparous (P = 0)

60 (54.1%)

51 (45.9%)

111

Multiparous (P ≥ 1)

66 (46.8%)

75 (53.2%)

141

History of abdominal surgery, n (%)

   

0.357

Presence

24 (44.4%)

30 (55.6%)

54

Absence

102 (51.5%)

96 (48.5%)

198

Type of previous abdominal scar incision, n (%)

   

0.694

Midline

5 (50%)

5 (50%)

10

Transverse

16 (41%)

23 (59%)

39

Laparoscopic

1 (100%)

0

1

Other

2 (50%)

2 (50%)

4

Abdominal wall thickness (cm)

   

0.889

Median (interquartile range)

 1.7 (1.3-2.2)

 1.7 (1.3-2.1)

 1.7 (1.3-2.1)

Deep vertical pocket (cm)

   

 0.135

Mean ± SD

3.9 ± 0.9

4.1 ± 1.0

4.0 ± 1.0

Placental location n (%)

   

0.130

Anterior

72 (54.5%)

60 (45.5%)

132

Posterior

54 (45.0%)

66 (55.0%)

120

Myoma uteri n (%)

   

0.175

Presence

1 (20%)

4 (80%)

5

Absence

125 (50.6%)

122 (49.4%)

247