Table 2.

Smoothed percentiles for birthweight (grams) of first born male and female.

GA (weeks)	First born male babies smoothed percentiles											First born female babies smoothed percentiles
	N	C3	C10	C25	C50	C75	C90	C97	L	M	S	N	C3	C10	C25	C50	C75	C90	C97	L	M	S
25	12	657	725	788	856	926	993	1067	−0.26	856	326	6	600	673	738	805	872	936	1007	−0.27	805	798
26	58	721	803	878	958	1040	1120	1210	−0.28	958	459	28	667	753	830	910	990	1069	1157	−0.27	910	1252
27	138	792	892	982	1077	1174	1271	1383	−0.33	1077	137	80	732	833	923	1016	1112	1207	1318	−0.30	1016	1102
28	307	869	993	1101	1213	1327	1443	1584	−0.37	1213	365	198	803	920	1025	1135	1249	1366	1506	−0.39	1135	1161
29	440	953	1101	1227	1355	1487	1624	1796	−0.29	1355	289	297	883	1021	1144	1273	1408	1550	1725	−0.39	1273	1352
30	670	1047	1216	1358	1502	1650	1807	2008	−0.28	1502	309	448	968	1128	1270	1419	1577	1743	1955	−0.26	1419	1443
31	979	1162	1352	1511	1671	1838	2014	2243	0.17	1671	305	606	1065	1250	1413	1582	1760	1948	2189	0.27	1582	1602
32	1450	1300	1508	1684	1862	2046	2241	2490	−0.13	1862	306	1018	1190	1400	1581	1768	1962	2165	2420	0.06	1768	1764
33	2129	1461	1680	1869	2063	2262	2468	2726	−0.08	2063	346	1573	1351	1574	1766	1964	2167	2376	2633	−0.12	1964	1975
34	4195	1640	1867	2067	2273	2483	2697	2954	0.06	2273	336	3054	1547	1776	1976	2181	2391	2604	2859	−0.23	2181	2193
35	7699	1824	2058	2266	2482	2701	2919	3173	0.12	2482	360	5813	1752	1984	2189	2403	2620	2837	3092	−0.10	2403	2418
36	17663	2040	2272	2483	2704	2930	3152	3406	0.18	2704	367	12894	1956	2182	2387	2604	2826	3046	3302	0.19	2604	2614
37	59435	2274	2495	2702	2927	3159	3388	3648	0.16	2927	366	43413	2182	2394	2595	2813	3040	3266	3525	0.11	2813	2828
38	151706	2461	2668	2872	3099	3337	3572	3835	0.15	3099	367	122852	2368	2566	2761	2979	3209	3438	3697	0.25	2979	2996
39	222147	2579	2784	2990	3223	3469	3710	3975	0.15	3223	372	206784	2485	2680	2876	3098	3334	3567	3827	0.15	3098	3116
40	709857	2610	2818	3025	3260	3507	3750	4018	0.14	3260	383	187135	2547	2748	2951	3183	3428	3667	3930	0.14	3183	3199
41	187571	2654	2870	3087	3332	3590	3841	4115	0.13	3332	392	58249	2622	2829	3040	3281	3535	3780	4046	0.14	3281	3297
42	21317	2731	2954	3178	3431	3696	3953	4232	−0.28	3431	410	5434	2603	2817	3035	3286	3549	3803	4075	−0.20	3286	3297