TABLE 1.

Race/ethnic-specific percentiles for fetal growth velocity of anthropometric measurements by gestational age, Eunice Kennedy Shriver National Institute of Child Health and Human Development fetal growth studies

Gestational age, wk	Percentile
	5th	10th	50th	90th	95th
Biparietal diameter, mm-white
11	2.4	2.6	3.4	4.2	4.4
12	2.4	2.7	3.6	4.6	4.9
13	2.3	2.6	3.8	4.9	5.3
14	2.1	2.4	3.7	5.1	5.5
15	1.7	2.1	3.6	5.2	5.6
16	1.3	1.8	3.4	5.2	5.7
17	0.9	1.4	3.3	5.2	5.7
18	0.6	1.2	3.1	5.2	5.8
19	0.4	1.0	3.1	5.3	6.0
20	0.2	0.8	3.1	5.5	6.2
21	0.0	0.7	3.1	5.7	6.4
22	−0.1	0.6	3.2	5.9	6.7
23	−0.3	0.4	3.1	6.0	6.9
24	−0.6	0.2	3.1	6.2	7.1
25	−0.8	0.0	3.1	6.3	7.2
26	−1.0	−0.2	3.0	6.4	7.4
27	−1.3	−0.4	3.0	6.5	7.5
28	−1.5	−0.6	2.9	6.5	7.6
29	−1.8	−0.8	2.8	6.6	7.7
30	−2.1	−1.0	2.7	6.6	7.8
31	−2.4	−1.3	2.6	6.6	7.8
32	−2.7	−1.6	2.4	6.6	7.8
33	−3.0	−1.9	2.2	6.6	7.8
34	−3.3	−2.2	2.0	6.4	7.7
35	−3.7	−2.5	1.8	6.3	7.6
36	−4.0	−2.8	1.6	6.1	7.5
37	−4.3	−3.1	1.3	6.0	7.4
38	−4.6	−3.3	1.1	5.9	7.2
39	−4.8	−3.6	1.0	5.7	7.1
40	−5.0	−3.8	0.8	5.6	7.1
41	−5.2	−3.9	0.7	5.6	7.0
Head circumference, mm-white
11	9.0	9.7	12.0	14.4	15.1
12	9.2	10.0	12.8	15.7	16.6
13	9.0	10.0	13.3	16.7	17.7
14	8.4	9.5	13.3	17.3	18.5
15	7.6	8.8	13.1	17.6	18.9
16	6.5	7.9	12.7	17.7	19.2
17	5.5	7.0	12.3	17.8	19.4
18	4.5	6.1	11.9	17.9	19.7
19	3.8	5.6	11.8	18.3	20.2
20	3.3	5.2	11.9	18.9	20.9
21	2.8	4.8	11.9	19.4	21.5
22	2.2	4.3	11.9	19.8	22.1
23	1.5	3.7	11.8	20.2	22.6
24	0.7	3.1	11.6	20.5	23.1
25	−0.1	2.4	11.4	20.7	23.4
26	−0.9	1.7	11.0	20.8	23.6
27	−1.8	0.9	10.7	20.9	23.8
28	−2.8	0.0	10.2	20.9	23.9
29	−3.7	−0.8	9.8	20.8	24.0
30	−4.7	−1.7	9.3	20.6	23.9
31	−5.7	−2.6	8.7	20.4	23.8
32	−6.7	−3.5	8.1	20.1	23.6
33	−7.8	−4.5	7.4	19.7	23.3
34	−8.8	−5.5	6.6	19.2	22.9
35	−9.9	−6.5	5.9	18.7	22.4
36	−10.9	−7.4	5.1	18.2	21.9
37	−11.8	−8.3	4.4	17.6	21.5
38	−12.6	−9.0	3.8	17.2	21.1
39	−13.3	−9.7	3.3	16.8	20.8
40	−13.8	−10.2	2.9	16.6	20.5
41	−14.3	−10.7	2.6	16.4	20.5
Abdominal circumference, mm-white
11	6.4	7.1	9.5	12.1	12.9
12	6.7	7.5	10.5	13.7	14.6
13	6.7	7.7	11.3	15.1	16.2
14	6.5	7.6	11.8	16.3	17.6
15	5.9	7.3	12.1	17.3	18.8
16	5.2	6.7	12.2	18.1	19.8
17	4.3	6.0	12.2	18.7	20.6
18	3.4	5.3	12.1	19.3	21.4
19	2.5	4.6	12.0	19.9	22.2
20	1.7	3.9	12.0	20.6	23.1
21	0.8	3.2	11.9	21.2	23.9
22	−0.2	2.4	11.8	21.7	24.6
23	−1.1	1.6	11.6	22.1	25.2
24	−2.1	0.8	11.4	22.6	25.9
25	−3.1	0.0	11.2	23.0	26.5
26	−4.0	−0.8	11.0	23.4	27.1
27	−4.9	−1.5	10.9	23.9	27.8
28	−5.6	−2.1	10.9	24.5	28.5
29	−6.3	−2.6	10.9	25.2	29.4
30	−6.9	−3.1	11.1	26.0	30.3
31	−7.6	−3.6	11.1	26.7	31.2
32	−8.4	−4.2	11.1	27.3	32.0
33	−9.2	−4.9	11.0	27.8	32.7
34	−10.2	−5.7	10.8	28.2	33.3
35	−11.2	−6.5	10.5	28.4	33.7
36	−12.3	−7.5	10.0	28.6	34.0
37	−13.6	−8.6	9.4	28.5	34.1
38	−14.9	−9.8	8.7	28.2	34.0
39	−16.3	−11.2	7.8	27.8	33.7
40	−17.9	−12.6	6.7	27.2	33.2
41	−19.6	−14.2	5.5	26.4	32.5
Femur length, mm–white
11	1.2	1.3	1.7	2.1	2.2
12	1.5	1.7	2.3	2.9	3.1
13	1.8	2.0	2.8	3.7	4.0
14	1.8	2.1	3.2	4.4	4.8
15	1.7	2.0	3.5	5.0	5.5
16	1.3	1.7	3.5	5.4	5.9
17	0.8	1.3	3.3	5.6	6.2
18	0.2	0.8	3.1	5.7	6.4
19	−0.3	0.4	3.0	5.8	6.7
20	−0.6	0.1	2.9	6.1	7.0
21	−1.0	−0.2	2.9	6.3	7.3
22	−1.4	−0.5	2.8	6.5	7.6
23	−1.8	−0.9	2.7	6.6	7.8
24	−2.2	−1.2	2.6	6.8	8.0
25	−2.6	−1.5	2.5	6.9	8.2
26	−3.0	−1.9	2.4	7.0	8.4
27	−3.4	−2.2	2.3	7.1	8.6
28	−3.7	−2.4	2.2	7.3	8.8
29	−4.0	−2.7	2.1	7.4	9.0
30	−4.2	−2.9	2.1	7.6	9.3
31	−4.5	−3.1	2.1	7.8	9.5
32	−4.8	−3.3	2.0	7.9	9.7
33	−5.0	−3.6	2.0	8.1	9.9
34	−5.3	−3.8	1.9	8.2	10.0
35	−5.6	−4.1	1.8	8.2	10.2
36	−5.9	−4.3	1.7	8.3	10.3
37	−6.3	−4.6	1.5	8.3	10.3
38	−6.6	−4.9	1.4	8.2	10.3
39	−6.9	−5.2	1.2	8.2	10.3
40	−7.2	−5.5	1.0	8.1	10.2
41	−7.6	−5.8	0.7	7.9	10.1
Humerus length, mm-white
11	1.3	1.4	1.8	2.1	2.3
12	1.7	1.9	2.4	3.0	3.2
13	2.0	2.2	2.9	3.8	4.0
14	2.0	2.3	3.3	4.4	4.8
15	1.8	2.1	3.4	4.9	5.3
16	1.3	1.8	3.3	5.1	5.6
17	0.8	1.3	3.1	5.1	5.7
18	0.2	0.8	2.8	5.1	5.7
19	−0.3	0.3	2.6	5.1	5.8
20	−0.6	0.1	2.5	5.2	6.0
21	−0.9	−0.2	2.5	5.4	6.2
22	−1.2	−0.5	2.4	5.5	6.4
23	−1.6	−0.8	2.3	5.6	6.6
24	−1.9	−1.0	2.2	5.7	6.7
25	−2.2	−1.3	2.1	5.7	6.8
26	−2.5	−1.6	1.9	5.8	6.9
27	−2.8	−1.8	1.8	5.8	7.0
28	−3.1	−2.0	1.8	5.9	7.1
29	−3.3	−2.2	1.7	6.0	7.3
30	−3.5	−2.4	1.7	6.1	7.4
31	−3.7	−2.6	1.6	6.2	7.5
32	−3.9	−2.8	1.6	6.3	7.7
33	−4.1	−2.9	1.5	6.3	7.8
34	−4.3	−3.1	1.5	6.4	7.9
35	−4.5	−3.3	1.4	6.5	8.0
36	−4.7	−3.5	1.3	6.5	8.1
37	−5.0	−3.7	1.2	6.5	8.1
38	−5.2	−3.9	1.1	6.5	8.1
39	−5.5	−4.1	0.9	6.4	8.0
40	−5.7	−4.4	0.7	6.3	8.0
41	−6.1	−4.7	0.5	6.1	7.8
Estimated fetal weight, g-white
11	4	5	8	13	14
12	5	6	11	16	18
13	7	8	14	21	23
14	9	11	18	26	29
15	11	14	23	33	37
16	14	17	29	42	46
17	17	21	36	52	57
18	20	25	44	64	70
19	23	29	52	77	85
20	25	33	61	92	101
21	27	36	70	107	118
22	28	39	80	124	138
23	29	42	90	143	159
24	29	44	101	163	182
25	28	46	113	185	207
26	27	48	125	209	235
27	25	49	138	235	264
28	23	50	152	263	297
29	20	51	167	294	332
30	16	51	183	327	370
31	10	49	198	360	408
32	0	44	211	392	447
33	−14	36	221	423	484
34	−32	23	227	451	518
35	−54	5	229	474	547
36	−81	−16	227	493	572
37	−111	−41	222	508	594
38	−142	−67	214	520	612
39	−175	−95	203	529	626
40	−209	−124	191	535	638
41	−244	−155	176	539	648
Biparietal diameter, mm-black
11	2.5	2.7	3.4	4.3	4.5
12	2.5	2.7	3.7	4.7	5.0
13	2.3	2.6	3.8	5.0	5.3
14	2.0	2.4	3.7	5.1	5.6
15	1.6	2.1	3.6	5.2	5.7
16	1.2	1.7	3.4	5.2	5.7
17	0.9	1.4	3.2	5.2	5.8
18	0.6	1.1	3.1	5.3	5.9
19	0.4	1.0	3.1	5.4	6.1
20	0.2	0.8	3.2	5.6	6.3
21	0.0	0.7	3.1	5.8	6.5
22	−0.2	0.5	3.1	5.9	6.7
23	−0.5	0.3	3.1	6.0	6.9
24	−0.7	0.1	3.0	6.2	7.1
25	−1.0	−0.1	3.0	6.2	7.2
26	−1.2	−0.3	2.9	6.3	7.3
27	−1.5	−0.6	2.8	6.4	7.5
28	−1.7	−0.8	2.8	6.5	7.6
29	−2.0	−1.0	2.7	6.5	7.7
30	−2.3	−1.2	2.6	6.6	7.7
31	−2.5	−1.5	2.4	6.6	7.8
32	−2.9	−1.8	2.3	6.5	7.8
33	−3.2	−2.1	2.1	6.4	7.7
34	−3.6	−2.4	1.8	6.3	7.6
35	−3.9	−2.8	1.6	6.1	7.4
36	−4.3	−3.1	1.3	5.9	7.3
37	−4.5	−3.3	1.1	5.8	7.2
38	−4.7	−3.4	1.1	5.8	7.2
39	−4.8	−3.5	1.0	5.8	7.2
40	−4.8	−3.5	1.1	5.9	7.4
41	−4.7	−3.4	1.2	6.2	7.6
Head circumference, mm-black
11	9.2	9.9	12.3	14.9	15.6
12	9.4	10.2	13.1	16.2	17.1
13	9.0	10.0	13.5	17.2	18.2
14	8.3	9.4	13.5	17.7	18.9
15	7.2	8.5	13.1	17.9	19.3
16	6.0	7.5	12.6	17.9	19.5
17	4.9	6.5	12.1	18.0	19.7
18	4.0	5.7	11.8	18.2	20.1
19	3.4	5.2	11.8	18.7	20.7
20	2.8	4.8	11.9	19.3	21.4
21	2.1	4.2	11.8	19.7	22.0
22	1.4	3.6	11.7	20.1	22.5
23	0.6	2.9	11.4	20.4	22.9
24	−0.3	2.2	11.2	20.6	23.3
25	−1.2	1.4	10.9	20.7	23.6
26	−2.1	0.7	10.5	20.8	23.8
27	−3.0	−0.1	10.2	20.9	24.0
28	−3.9	−0.9	9.8	20.9	24.2
29	−4.7	−1.7	9.4	21.0	24.3
30	−5.7	−2.5	9.0	20.9	24.4
31	−6.6	−3.4	8.4	20.7	24.3
32	−7.7	−4.3	7.8	20.4	24.1
33	−8.8	−5.4	7.0	20.0	23.7
34	−10.0	−6.5	6.2	19.4	23.2
35	−11.1	−7.6	5.3	18.7	22.6
36	−12.2	−8.6	4.5	18.1	22.1
37	−12.9	−9.3	3.9	17.7	21.7
38	−13.5	−9.8	3.6	17.5	21.6
39	−13.8	−10.1	3.4	17.5	21.6
40	−13.9	−10.2	3.5	17.8	22.0
41	−13.9	−10.0	3.9	18.4	22.6
Abdominal circumference, mm-black
11	5.9	6.6	9.5	12.5	13.4
12	6.0	6.9	10.4	14.1	15.2
13	5.8	6.9	11.1	15.5	16.8
14	5.3	6.6	11.5	16.7	18.2
15	4.6	6.1	11.7	17.7	19.4
16	3.7	5.4	11.7	18.5	20.5
17	2.7	4.6	11.6	19.2	21.4
18	1.7	3.8	11.6	19.8	22.3
19	0.7	3.0	11.5	20.5	23.2
20	−0.3	2.2	11.4	21.2	24.1
21	−1.3	1.3	11.2	21.8	24.9
22	−2.4	0.4	11.0	22.3	25.6
23	−3.5	−0.5	10.8	22.7	26.3
24	−4.6	−1.4	10.5	23.2	26.9
25	−5.6	−2.2	10.3	23.7	27.6
26	−6.5	−2.9	10.2	24.2	28.4
27	−7.3	−3.6	10.2	24.9	29.2
28	−8.1	−4.1	10.3	25.7	30.2
29	−8.6	−4.5	10.5	26.6	31.4
30	−9.2	−5.0	10.8	27.6	32.5
31	−10.0	−5.5	10.9	28.4	33.6
32	−10.9	−6.2	10.9	29.1	34.5
33	−11.9	−7.1	10.7	29.6	35.2
34	−13.1	−8.1	10.3	29.9	35.7
35	−14.4	−9.3	9.7	30.0	36.0
36	−15.7	−10.3	9.2	30.1	36.3
37	−16.7	−11.2	8.9	30.4	36.7
38	−17.5	−11.9	8.8	30.8	37.4
39	−18.1	−12.3	8.9	31.6	38.3
40	−18.5	−12.6	9.3	32.6	39.5
41	−18.8	−12.6	10.0	34.1	41.2
Femur length, mm-black
11	1.3	1.4	1.8	2.2	2.4
12	1.7	1.9	2.5	3.1	3.3
13	2.0	2.2	3.1	4.0	4.3
14	1.9	2.3	3.4	4.7	5.1
15	1.7	2.1	3.5	5.2	5.7
16	1.2	1.7	3.4	5.4	6.0
17	0.6	1.1	3.2	5.5	6.2
18	0.1	0.7	3.0	5.6	6.3
19	−0.3	0.3	2.9	5.8	6.6
20	−0.7	0.1	2.9	6.0	7.0
21	−1.1	−0.2	2.9	6.3	7.3
22	−1.4	−0.6	2.8	6.4	7.5
23	−1.8	−0.9	2.7	6.6	7.8
24	−2.2	−1.2	2.6	6.7	8.0
25	−2.6	−1.5	2.5	6.9	8.2
26	−3.0	−1.9	2.4	7.0	8.4
27	−3.3	−2.1	2.3	7.1	8.6
28	−3.6	−2.4	2.2	7.3	8.8
29	−3.9	−2.6	2.2	7.5	9.0
30	−4.1	−2.8	2.2	7.6	9.3
31	−4.4	−3.0	2.1	7.8	9.5
32	−4.7	−3.3	2.1	7.9	9.7
33	−5.0	−3.5	2.0	8.0	9.9
34	−5.4	−3.8	1.9	8.1	10.0
35	−5.7	−4.1	1.7	8.1	10.0
36	−6.0	−4.4	1.6	8.1	10.1
37	−6.2	−4.6	1.5	8.2	10.2
38	−6.4	−4.8	1.4	8.3	10.3
39	−6.6	−4.9	1.5	8.4	10.5
40	−6.7	−5.0	1.5	8.7	10.8
41	−6.8	−5.0	1.7	9.0	11.2
Humerus length, mm-black
11	1.4	1.5	1.9	2.4	2.5
12	1.8	2.0	2.6	3.3	3.5
13	2.0	2.3	3.2	4.1	4.4
14	2.0	2.3	3.5	4.8	5.2
15	1.6	2.0	3.5	5.1	5.6
16	1.1	1.5	3.3	5.2	5.8
17	0.4	1.0	3.0	5.2	5.9
18	−0.1	0.5	2.7	5.2	6.0
19	−0.5	0.1	2.6	5.3	6.2
20	−0.9	−0.1	2.6	5.5	6.4
21	−1.2	−0.4	2.5	5.7	6.6
22	−1.6	−0.8	2.4	5.8	6.8
23	−2.0	−1.1	2.2	5.9	7.0
24	−2.3	−1.4	2.1	5.9	7.1
25	−2.6	−1.7	2.0	6.0	7.2
26	−3.0	−1.9	1.9	6.1	7.3
27	−3.2	−2.2	1.8	6.2	7.5
28	−3.5	−2.4	1.7	6.2	7.6
29	−3.7	−2.6	1.7	6.4	7.8
30	−3.9	−2.7	1.7	6.5	8.0
31	−4.1	−2.9	1.7	6.6	8.1
32	−4.4	−3.1	1.6	6.7	8.3
33	−4.6	−3.3	1.5	6.8	8.4
34	−4.8	−3.5	1.4	6.8	8.4
35	−5.1	−3.8	1.3	6.8	8.5
36	−5.3	−4.0	1.2	6.9	8.5
37	−5.5	−4.1	1.2	6.9	8.7
38	−5.6	−4.2	1.2	7.1	8.9
39	−5.6	−4.2	1.3	7.3	9.1
40	−5.6	−4.1	1.5	7.7	9.6
41	−5.6	−4.0	1.8	8.2	10.1
Estimated fetal weight, g-black
11	4	5	9	13	15
12	5	6	11	17	19
13	6	8	15	22	24
14	8	10	19	28	31
15	10	13	23	35	39
16	12	16	29	44	48
17	15	19	36	54	60
18	17	22	43	65	72
19	18	25	50	78	86
20	19	27	58	92	102
21	19	29	66	107	119
22	19	31	75	123	138
23	19	32	84	141	158
24	17	33	94	161	181
25	15	34	104	182	205
26	13	34	115	205	232
27	10	34	127	230	261
28	6	34	141	258	293
29	2	34	155	288	328
30	−3	33	170	320	366
31	−11	30	183	353	404
32	−23	23	195	385	442
33	−39	12	203	414	477
34	−60	−4	207	439	509
35	−86	−25	205	458	535
36	−113	−46	202	477	559
37	−139	−67	200	495	584
38	−163	−87	200	516	611
39	−184	−103	202	539	641
40	−204	−117	209	569	678
41	−220	−127	221	606	722
Biparietal diameter, mm-Hispanic
11	2.3	2.5	3.3	4.1	4.4
12	2.3	2.6	3.6	4.6	4.9
13	2.2	2.5	3.7	4.9	5.2
14	2.0	2.4	3.7	5.1	5.5
15	1.7	2.1	3.6	5.2	5.6
16	1.3	1.7	3.4	5.2	5.7
17	0.9	1.4	3.3	5.2	5.8
18	0.6	1.1	3.1	5.2	5.9
19	0.3	0.9	3.1	5.4	6.0
20	0.2	0.8	3.1	5.6	6.3
21	0.0	0.7	3.1	5.7	6.5
22	−0.2	0.5	3.2	5.9	6.7
23	−0.4	0.4	3.1	6.1	6.9
24	−0.6	0.2	3.1	6.2	7.1
25	−0.9	0.0	3.1	6.3	7.3
26	−1.1	−0.2	3.0	6.4	7.4
27	−1.4	−0.5	2.9	6.5	7.6
28	−1.7	−0.7	2.8	6.6	7.7
29	−1.9	−0.9	2.7	6.6	7.7
30	−2.2	−1.2	2.6	6.6	7.8
31	−2.5	−1.4	2.5	6.6	7.8
32	−2.8	−1.7	2.3	6.6	7.8
33	−3.2	−2.0	2.1	6.5	7.8
34	−3.5	−2.3	1.9	6.4	7.7
35	−3.9	−2.7	1.7	6.2	7.6
36	−4.2	−3.0	1.4	6.1	7.4
37	−4.4	−3.2	1.3	6.0	7.4
38	−4.6	−3.4	1.2	5.9	7.3
39	−4.7	−3.5	1.1	5.9	7.3
40	−4.8	−3.5	1.1	6.0	7.5
41	−4.8	−3.5	1.2	6.2	7.7
Head circumference, mm-Hispanic
11	8.4	9.2	12.0	15.0	15.8
12	8.5	9.5	12.9	16.5	17.6
13	8.2	9.3	13.4	17.7	18.9
14	7.5	8.8	13.5	18.5	19.9
15	6.4	7.9	13.3	18.9	20.6
16	5.2	6.8	12.8	19.1	21.0
17	3.9	5.7	12.3	19.3	21.3
18	2.8	4.7	11.9	19.5	21.7
19	1.9	4.0	11.8	19.9	22.3
20	1.2	3.5	11.8	20.6	23.1
21	0.5	2.9	11.8	21.1	23.9
22	−0.3	2.3	11.7	21.7	24.6
23	−1.2	1.5	11.6	22.1	25.2
24	−2.1	0.8	11.4	22.5	25.7
25	−3.1	0.0	11.1	22.8	26.2
26	−4.1	−0.9	10.8	23.0	26.6
27	−5.1	−1.7	10.4	23.2	26.9
28	−6.1	−2.6	10.0	23.3	27.1
29	−7.1	−3.5	9.6	23.3	27.4
30	−8.1	−4.4	9.1	23.3	27.5
31	−9.2	−5.4	8.6	23.2	27.5
32	−10.3	−6.4	8.0	23.0	27.4
33	−11.4	−7.4	7.3	22.7	27.2
34	−12.6	−8.5	6.5	22.3	26.9
35	−13.8	−9.6	5.7	21.7	26.4
36	−14.9	−10.6	4.9	21.1	25.9
37	−15.9	−11.6	4.1	20.6	25.4
38	−16.7	−12.4	3.5	20.2	25.0
39	−17.4	−13.0	3.0	19.8	24.7
40	−18.0	−13.6	2.6	19.6	24.5
41	−18.5	−14.0	2.3	19.5	24.5
Abdominal circumference, mm-Hispanic
11	5.9	6.6	9.3	12.2	13.0
12	6.1	7.0	10.3	13.8	14.8
13	6.0	7.1	11.1	15.3	16.5
14	5.7	6.9	11.6	16.6	18.0
15	5.1	6.6	11.9	17.6	19.3
16	4.3	6.0	12.1	18.5	20.4
17	3.4	5.2	12.0	19.3	21.4
18	2.4	4.4	11.9	19.9	22.3
19	1.4	3.6	11.9	20.6	23.2
20	0.4	2.9	11.8	21.3	24.1
21	−0.6	2.0	11.6	21.8	24.9
22	−1.7	1.1	11.4	22.4	25.6
23	−2.8	0.2	11.2	22.8	26.3
24	−3.8	−0.7	10.9	23.3	26.9
25	−4.8	−1.5	10.7	23.8	27.6
26	−5.8	−2.3	10.6	24.3	28.3
27	−6.6	−3.0	10.5	24.9	29.1
28	−7.4	−3.5	10.6	25.6	30.1
29	−8.0	−4.0	10.8	26.5	31.2
30	−8.6	−4.4	11.0	27.5	32.3
31	−9.3	−4.9	11.2	28.3	33.4
32	−10.2	−5.6	11.2	29.0	34.3
33	−11.2	−6.4	11.0	29.5	35.0
34	−12.4	−7.4	10.6	29.8	35.5
35	−13.7	−8.6	10.1	29.9	35.7
36	−15.0	−9.8	9.4	29.9	35.9
37	−16.2	−10.9	8.9	29.9	36.1
38	−17.4	−11.8	8.4	29.9	36.3
39	−18.4	−12.7	8.0	30.1	36.6
40	−19.3	−13.5	7.8	30.4	37.0
41	−20.1	−14.2	7.6	30.8	37.7
Femur length, mm-Hispanic
11	1.3	1.3	1.7	2.0	2.1
12	1.6	1.8	2.3	2.9	3.0
13	1.9	2.1	2.8	3.7	3.9
14	1.9	2.2	3.2	4.3	4.7
15	1.8	2.1	3.4	4.8	5.3
16	1.4	1.8	3.4	5.1	5.6
17	0.9	1.4	3.3	5.3	5.9
18	0.4	1.0	3.1	5.4	6.0
19	0.0	0.6	3.0	5.5	6.3
20	−0.3	0.3	2.9	5.7	6.6
21	−0.7	0.1	2.9	5.9	6.8
22	−1.1	−0.2	2.8	6.1	7.1
23	−1.4	−0.6	2.7	6.2	7.3
24	−1.8	−0.9	2.6	6.3	7.5
25	−2.2	−1.2	2.4	6.4	7.6
26	−2.5	−1.5	2.3	6.5	7.8
27	−2.9	−1.8	2.2	6.6	7.9
28	−3.1	−2.0	2.2	6.8	8.1
29	−3.4	−2.2	2.2	6.9	8.3
30	−3.6	−2.4	2.1	7.1	8.6
31	−3.9	−2.6	2.1	7.2	8.8
32	−4.1	−2.8	2.1	7.4	9.0
33	−4.4	−3.1	2.0	7.4	9.1
34	−4.7	−3.3	1.8	7.5	9.2
35	−5.1	−3.6	1.7	7.5	9.2
36	−5.4	−3.9	1.5	7.5	9.2
37	−5.6	−4.1	1.4	7.5	9.3
38	−5.8	−4.3	1.4	7.5	9.4
39	−6.0	−4.4	1.3	7.6	9.5
40	−6.1	−4.5	1.4	7.8	9.7
41	−6.2	−4.6	1.5	8.1	10.0
Humerus length, mm-Hispanic
11	1.3	1.4	1.8	2.2	2.3
12	1.7	1.9	2.4	3.0	3.2
13	2.0	2.2	3.0	3.8	4.1
14	2.0	2.3	3.3	4.5	4.8
15	1.7	2.1	3.4	4.9	5.3
16	1.2	1.7	3.3	5.1	5.6
17	0.7	1.2	3.0	5.0	5.7
18	0.1	0.6	2.7	5.0	5.7
19	−0.4	0.3	2.6	5.0	5.8
20	−0.7	0.0	2.5	5.2	6.0
21	−1.0	−0.3	2.4	5.4	6.2
22	−1.3	−0.5	2.3	5.5	6.4
23	−1.6	−0.8	2.2	5.6	6.6
24	−2.0	−1.1	2.1	5.7	6.7
25	−2.3	−1.4	2.0	5.7	6.8
26	−2.6	−1.6	1.9	5.8	6.9
27	−2.9	−1.9	1.8	5.8	7.1
28	−3.1	−2.1	1.7	5.9	7.2
29	−3.4	−2.3	1.7	6.0	7.3
30	−3.6	−2.5	1.6	6.1	7.5
31	−3.8	−2.6	1.6	6.2	7.6
32	−4.0	−2.8	1.5	6.3	7.7
33	−4.2	−3.0	1.5	6.3	7.8
34	−4.4	−3.2	1.4	6.4	7.9
35	−4.7	−3.4	1.3	6.4	7.9
36	−4.9	−3.6	1.2	6.4	8.0
37	−5.1	−3.8	1.1	6.5	8.0
38	−5.2	−3.9	1.1	6.5	8.1
39	−5.4	−4.0	1.0	6.5	8.2
40	−5.6	−4.2	1.0	6.6	8.3
41	−5.7	−4.3	0.9	6.7	8.4
Estimated fetal weight, g—Hispanic
11	3	4	9	13	15
12	4	6	11	17	19
13	6	8	14	21	24
14	8	10	18	27	30
15	10	12	23	35	38
16	12	15	29	43	48
17	14	19	35	54	59
18	16	22	43	66	73
19	18	25	51	79	88
20	19	27	59	93	104
21	19	29	67	109	122
22	19	31	76	126	141
23	18	32	86	145	163
24	17	33	96	165	186
25	14	34	107	187	212
26	12	34	118	212	240
27	8	34	131	238	270
28	4	34	144	267	304
29	0	33	159	299	341
30	−6	32	175	334	382
31	−14	29	190	369	423
32	−27	21	203	403	464
33	−43	10	212	435	502
34	−65	−6	216	462	537
35	−93	−29	215	484	565
36	−124	−54	209	501	589
37	−154	−79	204	518	612
38	−184	−103	199	534	635
39	−211	−126	196	552	660
40	−237	−146	195	574	688
41	−261	−164	198	600	722
Biparietal diameter, mm-Asian
11	2.4	2.6	3.4	4.2	4.4
12	2.5	2.7	3.6	4.6	4.9
13	2.4	2.7	3.8	4.9	5.2
14	2.2	2.5	3.8	5.1	5.5
15	1.8	2.2	3.7	5.2	5.6
16	1.5	1.9	3.5	5.2	5.7
17	1.1	1.5	3.3	5.1	5.7
18	0.7	1.2	3.1	5.1	5.7
19	0.4	1.0	3.0	5.2	5.8
20	0.3	0.9	3.1	5.4	6.0
21	0.1	0.8	3.1	5.6	6.3
22	0.0	0.6	3.1	5.7	6.5
23	−0.2	0.5	3.1	5.9	6.7
24	−0.4	0.3	3.1	6.0	6.9
25	−0.7	0.2	3.1	6.2	7.1
26	−0.9	0.0	3.0	6.3	7.2
27	−1.1	−0.3	3.0	6.3	7.3
28	−1.4	−0.5	2.9	6.4	7.4
29	−1.7	−0.7	2.8	6.4	7.5
30	−2.0	−1.0	2.6	6.4	7.5
31	−2.3	−1.2	2.5	6.4	7.6
32	−2.5	−1.5	2.3	6.4	7.6
33	−2.8	−1.8	2.2	6.3	7.5
34	−3.1	−2.0	2.0	6.2	7.5
35	−3.4	−2.3	1.8	6.1	7.4
36	−3.7	−2.6	1.6	6.0	7.3
37	−4.0	−2.8	1.4	5.9	7.2
38	−4.3	−3.1	1.2	5.8	7.1
39	−4.6	−3.3	1.0	5.6	7.0
40	−4.8	−3.6	0.8	5.5	6.8
41	−5.1	−3.9	0.6	5.3	6.7
Head circumference, mm-Asian
11	9.2	9.8	11.9	14.1	14.8
12	9.5	10.2	12.8	15.5	16.3
13	9.4	10.3	13.3	16.5	17.4
14	8.9	9.9	13.4	17.1	18.1
15	8.1	9.2	13.2	17.4	18.6
16	7.1	8.3	12.8	17.4	18.8
17	6.0	7.4	12.3	17.4	18.9
18	5.0	6.5	11.8	17.4	19.0
19	4.2	5.8	11.6	17.6	19.3
20	3.7	5.4	11.6	18.0	19.9
21	3.3	5.1	11.7	18.5	20.5
22	2.7	4.7	11.7	19.0	21.1
23	2.1	4.2	11.6	19.3	21.6
24	1.4	3.6	11.4	19.6	22.0
25	0.7	2.9	11.2	19.8	22.3
26	−0.2	2.2	10.9	19.9	22.5
27	−1.0	1.5	10.5	19.9	22.6
28	−1.9	0.7	10.1	19.8	22.6
29	−2.9	−0.2	9.5	19.6	22.6
30	−3.9	−1.1	9.0	19.4	22.4
31	−4.8	−2.0	8.4	19.1	22.3
32	−5.8	−2.8	7.8	18.8	22.0
33	−6.7	−3.7	7.2	18.5	21.8
34	−7.6	−4.6	6.6	18.1	21.5
35	−8.5	−5.4	5.9	17.7	21.1
36	−9.4	−6.2	5.3	17.2	20.7
37	−10.4	−7.1	4.6	16.7	20.2
38	−11.3	−8.1	3.8	16.0	19.6
39	−12.4	−9.1	2.9	15.3	18.9
40	−13.4	−10.1	2.0	14.4	18.1
41	−14.5	−11.2	1.0	13.6	17.2
Abdominal circumference, mm-Asian
11	6.2	6.8	9.3	12.0	12.7
12	6.5	7.3	10.3	13.5	14.5
13	6.5	7.5	11.1	14.9	16.1
14	6.2	7.4	11.6	16.1	17.5
15	5.7	7.0	11.9	17.1	18.7
16	5.0	6.5	12.0	17.9	19.7
17	4.1	5.8	12.0	18.6	20.5
18	3.1	5.0	11.9	19.1	21.2
19	2.2	4.2	11.7	19.6	22.0
20	1.3	3.5	11.6	20.2	22.7
21	0.4	2.7	11.5	20.7	23.4
22	−0.6	1.9	11.3	21.2	24.1
23	−1.6	1.1	11.1	21.6	24.7
24	−2.6	0.3	10.8	22.0	25.2
25	−3.5	−0.5	10.6	22.4	25.8
26	−4.4	−1.2	10.5	22.8	26.4
27	−5.2	−1.9	10.4	23.3	27.1
28	−5.9	−2.4	10.4	23.9	27.9
29	−6.5	−2.8	10.5	24.7	28.8
30	−7.1	−3.3	10.7	25.4	29.7
31	−7.8	−3.8	10.7	26.1	30.6
32	−8.6	−4.4	10.7	26.6	31.3
33	−9.5	−5.2	10.5	27.0	31.9
34	−10.5	−6.1	10.1	27.3	32.3
35	−11.6	−7.0	9.7	27.4	32.6
36	−12.7	−8.0	9.2	27.5	32.8
37	−13.7	−8.8	8.9	27.6	33.1
38	−14.5	−9.5	8.7	27.9	33.6
39	−15.1	−10.0	8.7	28.4	34.2
40	−15.7	−10.4	8.8	29.1	35.1
41	−16.1	−10.7	9.1	30.1	36.3
Femur length, mm-Asian
11	1.3	1.3	1.6	2.0	2.0
12	1.7	1.8	2.3	2.8	2.9
13	2.0	2.2	2.9	3.6	3.8
14	2.1	2.4	3.3	4.3	4.6
15	2.0	2.3	3.5	4.8	5.2
16	1.6	2.0	3.4	5.0	5.5
17	1.1	1.5	3.2	5.1	5.6
18	0.5	1.1	3.0	5.1	5.7
19	0.1	0.7	2.8	5.2	5.9
20	−0.2	0.4	2.8	5.4	6.1
21	−0.5	0.2	2.8	5.6	6.4
22	−0.8	−0.1	2.7	5.7	6.6
23	−1.1	−0.3	2.7	5.9	6.9
24	−1.5	−0.6	2.6	6.0	7.0
25	−1.8	−0.9	2.5	6.1	7.2
26	−2.1	−1.1	2.4	6.2	7.4
27	−2.4	−1.4	2.3	6.3	7.5
28	−2.7	−1.7	2.2	6.4	7.7
29	−3.0	−1.9	2.2	6.6	7.9
30	−3.2	−2.1	2.1	6.7	8.0
31	−3.5	−2.3	2.1	6.8	8.2
32	−3.7	−2.5	2.0	6.9	8.3
33	−4.0	−2.7	1.9	6.9	8.4
34	−4.3	−3.0	1.8	7.0	8.6
35	−4.5	−3.2	1.8	7.1	8.7
36	−4.7	−3.4	1.7	7.1	8.8
37	−5.0	−3.6	1.6	7.2	8.8
38	−5.2	−3.8	1.5	7.2	8.9
39	−5.5	−4.0	1.4	7.2	9.0
40	−5.7	−4.2	1.3	7.2	9.0
41	−6.0	−4.5	1.2	7.3	9.1
Humerus length, mm-Asian
11	1.3	1.4	1.7	2.1	2.2
12	1.8	1.9	2.4	2.9	3.1
13	2.0	2.2	2.9	3.7	4.0
14	2.1	2.4	3.3	4.4	4.7
15	1.9	2.2	3.4	4.8	5.2
16	1.4	1.8	3.3	4.9	5.4
17	0.9	1.3	3.0	4.9	5.4
18	0.3	0.8	2.7	4.8	5.4
19	−0.2	0.4	2.5	4.8	5.4
20	−0.5	0.1	2.4	4.9	5.6
21	−0.8	−0.1	2.4	5.0	5.8
22	−1.0	−0.3	2.3	5.2	6.0
23	−1.3	−0.6	2.2	5.3	6.2
24	−1.6	−0.8	2.2	5.4	6.3
25	−1.9	−1.1	2.1	5.4	6.5
26	−2.2	−1.3	2.0	5.5	6.6
27	−2.5	−1.5	1.9	5.6	6.7
28	−2.7	−1.8	1.8	5.6	6.8
29	−3.0	−2.0	1.7	5.7	6.9
30	−3.2	−2.2	1.6	5.7	7.0
31	−3.4	−2.4	1.5	5.8	7.0
32	−3.6	−2.5	1.5	5.8	7.1
33	−3.8	−2.7	1.4	5.9	7.2
34	−4.0	−2.9	1.4	6.0	7.3
35	−4.2	−3.0	1.3	6.0	7.4
36	−4.3	−3.1	1.3	6.1	7.5
37	−4.5	−3.3	1.2	6.1	7.6
38	−4.7	−3.5	1.1	6.1	7.6
39	−5.0	−3.7	1.0	6.1	7.6
40	−5.2	−4.0	0.8	6.0	7.5
41	−5.5	−4.2	0.6	5.9	7.4
Estimated fetal weight, g-Asian
11	5	5	9	13	14
12	6	7	11	16	17
13	8	9	14	20	22
14	10	11	18	26	28
15	12	14	23	32	35
16	14	17	28	40	43
17	17	21	34	49	54
18	20	25	42	60	65
19	23	28	49	72	78
20	25	32	57	85	93
21	27	35	66	99	109
22	29	38	75	114	126
23	30	41	84	131	145
24	31	44	95	149	166
25	31	47	105	169	188
26	30	49	117	191	213
27	30	51	129	214	239
28	28	52	142	239	267
29	26	54	155	265	298
30	23	54	169	294	331
31	17	52	182	322	364
32	9	48	193	350	397
33	−2	41	201	376	428
34	−18	30	207	399	457
35	−37	15	209	419	482
36	−58	−2	208	437	505
37	−82	−21	206	452	526
38	−106	−40	203	466	545
39	−131	−61	198	479	564
40	−157	−83	193	492	582
41	−184	−105	187	506	601

Week corresponds to exact week (eg, 11 wk = 11.0 wk).

Estimated fetal weight was calculated using Hadlock et al.⁹