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. Author manuscript; available in PMC: 2012 Dec 5.
Published in final edited form as: Neonatology. 2011 Jul 25;100(4):398–403. doi: 10.1159/000325916

Table 1.

Estimated values for L, M and S parameters by ethnic group and gestational age

Gestational
age, weeks
Male
Female
L M S L M S
South Asian
32 1.03 1,485 0.21 0.72 1,404 0.21
33 0.95 1,729 0.20 0.64 1,643 0.20
34 0.86 1,973 0.19 0.55 1,882 0.19
35 0.78 2,204 0.18 0.47 2,108 0.18
36 0.70 2,421 0.17 0.39 2,321 0.17
37 0.61 2,636 0.16 0.30 2,531 0.16
38 0.53 2,866 0.15 0.22 2,755 0.15
39 0.45 3,069 0.14 0.14 2,954 0.14
40 0.36 3,206 0.13 0.05 3,086 0.13
41 0.28 3,339 0.12 −0.03 3,214 0.13
42 0.20 3,441 0.12 −0.12 3,312 0.12

White British
32 1.55 1,745 0.20 1.24 1,610 0.21
33 1.46 1,998 0.19 1.15 1,860 0.20
34 1.38 2,251 0.18 1.07 2,111 0.19
35 1.30 2,490 0.17 0.99 2,348 0.18
36 1.21 2,716 0.16 0.90 2,571 0.17
37 1.13 2,939 0.15 0.82 2,792 0.16
38 1.05 3,177 0.14 0.74 3,028 0.15
39 0.96 3,390 0.13 0.65 3,238 0.13
40 0.89 3,535 0.12 0.57 3,381 0.13
41 0.80 3,676 0.12 0.48 3,520 0.12
42 0.71 3,787 0.12 0.40 3,628 0.12