Table 2.

Extrauterine measurements and myometrial thickness at different uterine site by parity.

Parameters	Parity			Spearman rank correlation
	0 (N = 189)	1 (N = 76)	≥ 2 (N = 33)	P-value	r
Extrauterine measurements (mm)
Body L	44.49 ± 5.20	46.77 ± 5.92	53.75 ± 5.06	< 0.001	0.373
Body Td	43.14 ± 5.41	47.47 ± 6.37	52.87 ± 6.40	< 0.001	0.363
Body Ad	35.88 ± 5.00	40.74 ± 6.04	44.02 ± 6.43	< 0.001	0.374
Cervical L	30.15 ± 3.48	32.60 ± 4.07	33.00 ± 3.41	0.002	0.396
Depth of Uc	34.22 ± 4.52	34.90 ± 5.14	40.23 ± 5.08	0.007	0.384
Myometrial thickness (mm)
Fundal wall	10.28 ± 2.23	11.87 ± 2.37	12.26 ± 2.01	< 0.001	0.398
Mid-anterior wall	12.80 ± 2.75	14.86 ± 2.99	16.23 ± 3.27	< 0.001	0.395
Mid-side wall	12.27 ± 2.09	14.15 ± 2.41	15.06 ± 2.17	< 0.001	0.381
Anterior lower segment	7.75 ± 1.72	9.88 ± 2.32	10.51 ± 1.17	< 0.001	0.460
Lower side wall	8.03 ± 1.82	9.30 ± 2.41	10.05 ± 2.20	< 0.001	0.364
Left cornua uteri	3.64 ± 0.56	4.03 ± 0.99	4.43 ± 0.50	< 0.001	0.420
Right cornua uteri	3.64 ± 0.54	4.05 ± 1.01	4.38 ± 0.54	< 0.001	0.397

N, number of subjects; L, length; Td, transverse diameter; Ad, anteroposterior diameter; Uc, uterine cavity.