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Table 8 Mean birth weight, Ponderal index, classification in Lubchenco’s, Alisyahbana’s and present study by gestational age

From: Reference curves of birth weight, length, and head circumference for gestational ages in Yogyakarta, Indonesia

GA (w) Lubchenco Alisyahbana Present study
No of cases BW (g) PI C No of cases BW (g) PI C No of cases BW (g) PI C
26 68 1001 2.2 L      103 727 1.9 L
27 72 1065 2.2 L      80 855 2.1 L
28 118 1236 2.2 L      109 956 2.1 L
29 143 1300 2.3 L      94 1042 2.0 L
30 109 1484 2.3 L      119 1207 2.0 L
31 147 1590 2.4 L      163 1393 1.9 L
32 124 1732 2.4 L      394 1708 2.2 L
33 118 1957 2.4 L      469 1724 2.3 L
34 145 2278 2.5 A 43 2553 2.5 A 865 1892 2.3 L
35 188 2483 2.5 A 70 2704 2.6 A 1056 2040 2.4 L
36 202 2753 2.5 A 136 2849 2.4 L 1680 2359 2.5 A
37 372 2800 2.6 A 262 2819 2.5 A 2960 2618 2.5 A
38 636 3025 2.6 A 565 2903 2.5 A 7117 2833 2.6 A
39 1010 3130 2.6 A 1309 3066 2.6 A 12980 3035 2.7 A
40 1164 3226 2.6 A 1710 3146 2.5 A 16362 3145 2.7 A
41 632 3307 2.6 A 962 3205 2.6 A 7066 3312 2.8 A
42 336 3308 2.6 A 446 3228 2.6 A 2982 3253 2.7 A
Total 5584     5503     54599    
  1. C Classification; L Low; A Average; H High; GA Gestational Age; PI Ponderal Index; BW Birth Weight; g gram; w week