Table 3.

Extrauterine measurements and myometrial thickness at different uterine sites by chronological age.

Parameters	Age(years)						Pearson line correlation
	-20 (N = 15)	21–25 (N = 66)	26–30 (N = 117)	31–35 (N = 63)	36–40 (N = 21)	41–50 (N = 16)	P-value	r
Extrauterine measurements (mm)
Body L	43.08 ± 4.56	44.80 ± 6.06	44.95 ± 5.35	45.43 ± 5.74	48.94 ± 5.18	52.08 ± 5.17	< 0.001	0.383
Body Td	42.17 ± 7.25	42.76 ± 5.21	43.73 ± 5.81	44.37 ± 5.69	48.31 ± 7.00	51.92 ± 5.16	< 0.001	0.329
Body Ad	34.17 ± 4.47	35.50 ± 5.18	37.05 ± 5.45	38.05 ± 5.55	40.63 ± 5.75	46.23 ± 5.07	< 0.001	0.376
Cervical L	30.33 ± 3.58	30.03 ± 3.81	30.78 ± 3.50	31.56 ± 3.23	34.00 ± 3.42	34.23 ± 4.38	< 0.001	0.393
Depth of Uc	33.25 ± 4.01	34.92 ± 5.54	34.52 ± 4.78	34.60 ± 4.76	37.91 ± 4.73	38.74 ± 3.77	0.007	0.394
Myometrial thickness (mm)
Fundal wall	9.83 ± 1.98	9.88 ± 2.38	10.45 ± 2.26	10.78 ± 2.23	11.02 ± 2.01	13.34 ± 1.98	< 0.001	0.397
Mid-anterior wall	10.06 ± 2.31	11.39 ± 2.63	12.78 ± 2.95	13.9 ± 2.86	14.09 ± 2.3	16.95 ± 3.22	< 0.001	0.427
Mid-side wall	11.73 ± 3.54	11.99 ± 2.03	12.71 ± 2.44	13.01 ± 2.31	13.43 ± 2.26	14.9 ± 2.79	0.001	0.456
Anterior lower segment	6.41 ± 1.27	7.33 ± 1.48	8.13 ± 1.84	8.99 ± 1.85	9.96 ± 1.88	11.65 ± 2.17	< 0.001	0.496
Lower side wall	7.12 ± 1.46	7.46 ± 1.44	8.36 ± 2.13	8.72 ± 2.1	9.16 ± 1.98	10.74 ± 1.47	< 0.001	0.371
Left cornua uteri	3.55 ± 0.59	3.70 ± 0.70	3.78 ± 0.78	3.85 ± 0.67	4.3 ± 1.25	4.27 ± 0.93	0.016	0.426
Right cornua uteri	3.68 ± 0.65	3.69 ± 0.72	3.74 ± 0.75	3.82 ± 0.56	4.33 ± 1.23	4.38 ± 1.00	0.005	0.389

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