New birth weight reference standards customised to birth order and sex of babies from South India

Kumar, Velusamy Saravana; Jeyaseelan, Lakshmanan; Sebastian, Tunny; Regi, Annie; Mathew, Jiji; Jose, Ruby

doi:10.1186/1471-2393-13-38

BMC Pregnancy and Childbirth

Table 2 Smoothed percentiles for birth weight (grams) of later born male and female babies

From: New birth weight reference standards customised to birth order and sex of babies from South India

Later born male babies smoothed percentiles											Later born female babies smoothed percentiles
GA	N	C3	C10	C25	C50	C75	C90	C97	Mean	SD	N	C3	C10	C25	C50	C75	C90	C97	Mean	SD
24	11	73	199	392	645	916	1172	1440	663	102	5	55	176	383	679	1018	1353	1714	792	133
25	9	99	259	491	785	1096	1388	1692	1099	645	8	75	226	464	787	1149	1503	1882	1136	833
26	14	131	328	594	920	1260	1578	1907	914	282	9	104	287	552	895	1270	1634	2021	893	490
27	16	175	409	704	1053	1412	1745	2090	1408	909	13	147	365	652	1007	1388	1753	2142	1217	836
28	22	237	508	824	1185	1552	1892	2242	1071	316	18	211	463	766	1126	1506	1869	2253	1208	500
29	14	327	629	958	1324	1691	2031	2381	1141	416	24	302	582	894	1256	1633	1991	2369	1195	480
30	45	450	775	1107	1470	1834	2168	2513	1595	721	41	421	720	1038	1399	1772	2126	2498	1470	695
31	39	610	943	1271	1626	1980	2306	2642	1567	387	51	567	878	1197	1557	1926	2275	2642	1479	451
32	60	795	1127	1449	1795	2140	2457	2785	1820	496	51	735	1052	1373	1731	2099	2444	2807	1621	469
33	97	997	1324	1639	1978	2316	2627	2947	1928	461	60	924	1244	1564	1920	2284	2626	2984	1956	578
34	104	1214	1536	1844	2176	2507	2812	3126	2137	556	116	1140	1455	1769	2117	2472	2804	3152	2116	570
35	187	1453	1765	2064	2386	2707	3002	3307	2314	479	160	1380	1684	1984	2316	2653	2968	3298	2307	519
36	323	1712	2008	2293	2600	2906	3188	3479	2552	506	232	1637	1922	2202	2511	2824	3117	3422	2468	506
37	745	1977	2253	2518	2805	3090	3353	3625	2808	453	599	1891	2154	2412	2696	2983	3251	3530	2692	433
38	1518	2210	2466	2713	2979	3244	3489	3741	2983	395	1399	2111	2355	2595	2857	3122	3369	3626	2867	396
39	2145	2369	2615	2852	3108	3363	3598	3841	3119	382	2164	2273	2505	2732	2980	3231	3465	3707	2981	377
40	2140	2445	2692	2930	3187	3443	3680	3924	3187	390	2160	2369	2595	2816	3058	3302	3529	3765	3078	366
41	475	2471	2725	2969	3233	3496	3739	3990	3205	421	507	2409	2632	2850	3090	3331	3555	3788	3040	370
42	53	2480	2742	2994	3266	3537	3788	4046	3080	391	57	2429	2651	2869	3106	3346	3569	3801	3019	404

GA = Gestational Age (weeks), N = Number of babies in each group, C3 – C97 = Predicted Smoothed percentiles from GAMLSS model Mean & SD = Arithmetic Mean and standard deviation in each group.

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ISSN: 1471-2393

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