Table 4. Average times need for 2D ultrasound vs. live xPlane according to fetal spine position.

Fetal position/time (sec)	2D (n = 114)	Live xPlane (n = 89)	P value
Anterior	55.65 ± 34.14	139.5 ± 62.84	0.002
Posterior	44.72 ± 25.33	48.87 ± 51.58	0.256
Right	42.78 ± 28.65	73.29 ± 50.64	0.023
Left	55.75 ± 41.99	64.0 ± 38.1	0.377
Inferior	80.33 ± 45.85	46.0 ± 12.72	0.042
Superior	0	0	n/a
Total	51.71 ± 35.36	67.4 ± 51.29	0.111

Note:

Data is presented as number (percentage).