Distribution of uterocervical angles of pregnant women at 16+ 0 to 23+ 6 weeks gestation with low risk for preterm birth: first vietnamese cohort of women with singleton pregnancies

Table 4 GA-based UCAs corresponding to the 5th, 10th, 25th, 50th, 75th, 90th, and 95th

GA	N	SD	Distribution of UCA values according to percentile (^o)
GA	N	SD	5%	10%	25%	50%	75%	90%	95%
16^+ 0− 16^+ 6	112	22.19	39.82	48.11	59.32	73.55	88.62	104.64	114.10
17^+ 0− 17^+ 6	110	24.76	45.13	50.73	61.14	79.59	91.79	105.94	127.75
18^+ 0− 18^+ 6	149	27.32	30.03	45.32	64.80	79.86	100.39	114.50	124.44
19^+ 0− 19^+ 6	82	20.05	58.23	66.28	73.17	85.60	101.31	113.52	125.20
20^+ 0− 20^+ 6	110	24.15	48.72	56.00	70.90	85.68	102.07	119.73	132.69
21^+ 0− 21^+ 6	145	23.22	52.53	59.58	74.90	87.93	106.28	119.33	131.28
22^+ 0− 22^+ 6	215	26.93	44.30	57.84	72.44	90.37	105.14	122.35	128.48
23^+ 0− 23^+ 6	128	24.32	53.00	60.84	75.24	91.20	109.58	122.83	132.56

ISSN: 1471-2393