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Table 6 Relation between groups of placental location and the mean difference between 2D and 3D TVS EOD measurements

From: Towards more accurate measurement of edge to os distance in low-lying placenta using three dimensional transvaginal ultrasound: an innovative technique

Placental location groups

Mean difference (2D-3D estimate)(mean ± SD) mm

One way ANOVA

Games- Howel Post Hoc test

Direct Anterior/posterior

0.85 ± 0.82

0.000

1

Anterolateral/posterolateral

5.33 ± 5.29

0.001

Lateral

13.59 ± 4.56

0.000