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Table 3 Comparisons of 2D SWE outcomes between transabdominal and transvaginal examinations, shown as mean ± SD, median (25th -75th percentile). N = 50

From: Evaluation of the stiffness of normal cervix and its change with different factors using transvaginal two-dimensional shear wave elastography under strict quality control

 

Internal cervical os of midsagittal planes

External cervical os of midsagittal planes

Emean*

Emax*

Emin*

Emean

Emax*

Emin*

Transvaginal

44.55 ± 7.04, 44.82

(41.68–48.76)

49.79 ± 7.06, 50.04

(47.01–53.97)

37.38 ± 7.45, 37.81 (24.17–41.41)

22.51 ± 10.11, 21.33 (14.94–29.47)

28.75 ± 9.62, 29.78

(21.01–35.74)

15.95 ± 8.74, 14.20 (10.26–21.39)

Transabdominal

8.54 ± 3.79,

7.91

(5.60-11.19)

11.25 ± 4.57, 10.34 (7.85–14.64)

5.86 ± 2.65, 5.12 (3.79–7.18)

8.06 ± 3.15@, 7.43 (5.45–10.11)

11.11 ± 4.50@, 10.80 (8.18–13.29)

5.63 ± 4.49@, 4.67 (3.11–6.64)

t/Z

6.154

6.154

6.154

11.004

6.115

5.565

P

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

  1. * means non-normal distribution
  2. @ means P > 0.05 compared with corresponding parameters of internal cervical os of transabdominal midsagittal planes
  3. 2D SWE: two-dimensional shear wave elastography; SD: standard deviation; Emean: mean elasticity; Emax: maximal elasticity; Emin: minimal elasticity