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1 296例胎龄27~40周双胎新生儿出生体重、身长、头围的均值及百分位数值

指标/胎龄	n	出生均数			曲线参数				百分位数值
		均值	标准差		L	M	S		3rd	10th	25th	50th	75th	90th	97th
注：曲线拟合根据Cole等[12] LMS方法：L为转换数值的幂值，M为中位数，S为变异系数。
体重(g)	1 296
27	17	1 005	103		0.528	987	0.55		704	793	888	987	1 092	1 201	1 315
28	38	1 124	207		0.713	1 120	0.153		792	898	1 007	1 120	1 236	1 355	1 477
29	33	1 251	127		0.898	1 255	0.151		882	1 005	1 129	1 255	1 383	1 511	1 641
30	56	1 403	220		1.065	1 399	0.149		976	1 118	1 259	1 399	1 538	1 676	1 813
31	43	1 510	295		1.188	1 551	0.147		1 080	1 241	1 397	1 551	1 701	1 849	1 995
32	84	1 714	218		1.249	1 713	0.144		1 200	1 376	1 547	1 713	1 876	2 035	2 191
33	75	1 896	281		1.246	1 886	0.140		1 335	1 524	1 707	1 886	2 061	2 232	2 400
34	79	2 023	247		1.191	2 067	0.137		1 484	1 683	1 877	2 067	2 255	2 439	2 620
35	120	2 221	340		1.092	2 257	0.133		1 647	1 852	2 056	2 257	2 457	2 655	2 852
36	207	2 463	316		0.941	2 439	0.130		1 811	2 019	2 228	2 439	2 650	2 862	3 076
37	320	2 621	314		0.786	2 587	0.126		1 951	2 159	2 371	2 587	2 807	3 031	3 258
38	170	2 685	312		0.653	2 696	0.124		2 055	2 262	2 476	2 696	2 923	3 156	3 395
39	40	2 717	440		0.524	2 786	0.123		2 140	2 346	2 562	2 786	3 019	3 260	3 511
40	14	2 830	352		0.392	2 870	0.122		2 221	2 426	2 643	2 870	3 110	3 361	3 623
身长(cm)	1 296
27	17	34.9	2.5		0.828	35.837	0.074		30.6	32.3	34.1	35.8	37.6	39.4	41.2
28	38	37.9	2.6		1.401	37.234	0.070		31.8	33.7	35.5	37.2	39.0	40.7	42.3
29	33	38.1	2.2		1.950	38.583	0.066		33.1	35.0	36.8	38.6	40.2	41.8	43.4
30	56	39.9	2.6		2.476	39.895	0.062		34.4	36.4	38.2	39.9	41.5	43.0	44.4
31	43	40.6	3.3		2.965	41.158	0.057		35.8	37.7	39.5	41.2	42.7	44.1	45.4
32	84	42.3	2.0		3.350	42.369	0.053		37.2	39.1	40.8	42.4	43.8	45.1	46.4
33	75	43.5	2.4		3.655	43.528	0.049		38.6	40.4	42.0	43.5	44.9	46.1	47.3
34	79	44.3	1.9		3.890	44.644	0.045		40.0	41.7	43.2	44.6	45.9	47.1	48.2
35	120	45.5	2.0		4.015	45.765	0.041		41.4	43.0	44.5	45.8	47.0	48.1	49.1
36	207	46.8	1.8		4.011	46.827	0.038		42.7	44.2	45.6	46.8	48.0	49.1	50.1
37	320	47.7	1.7		3.967	47.656	0.036		43.8	45.2	46.5	47.7	48.8	49.8	50.8
38	170	48.0	1.8		3.931	48.201	0.035		44.5	45.8	47.0	48.2	49.3	50.3	51.2
39	40	48.3	1.9		3.865	48.609	0.034		45.0	46.3	47.5	48.6	49.7	50.7	51.6
40	14	48.7	1.8		3.801	48.976	0.033		45.4	46.7	47.9	49.0	50.0	51.0	51.9
头围(cm)	1 296
27	17	24.1	1.4		-0.662	24.774	0.081		21.2	22.3	23.5	24.8	26.2	27.7	29.4
28	38	25.4	1.8		0.634	25.819	0.075		22.0	23.3	24.5	25.8	27.1	28.5	29.8
29	33	27.3	1.0		1.871	26.831	0.070		22.8	24.2	25.6	26.8	28.1	29.2	30.4
30	56	27.9	1.9		3.010	27.758	0.064		23.6	25.2	26.5	27.8	28.9	29.9	30.9
31	43	28.3	2.1		3.897	28.615	0.058		24.5	26.1	27.4	28.6	29.7	30.6	31.5
32	84	29.3	1.5		4.259	29.455	0.052		25.6	27.1	28.4	29.5	30.4	31.3	32.1
33	75	30.2	1.4		4.188	30.274	0.047		26.9	28.2	29.3	30.3	31.2	32.0	32.8
34	79	31.0	0.9		3.919	31.046	0.042		28.1	29.2	30.1	31.0	31.9	32.6	33.4
35	120	31.6	1.3		3.610	31.743	0.037		29.1	30.1	30.9	31.7	32.5	33.2	33.9
36	207	32.4	1.1		3.352	32.318	0.034		30.0	30.8	31.6	32.3	33.0	33.7	34.3
37	320	32.7	1.0		3.224	32.690	0.031		30.5	31.3	32.0	32.7	33.3	34.0	34.6
38	170	32.8	1.0		3.234	32.878	0.028		30.9	31.6	32.2	32.9	33.5	34.1	34.6
39	40	32.8	1.0		3.302	33.003	0.027		31.1	31.8	32.4	33.0	33.6	34.1	34.7
40	14	33.1	1.1		3.376	33.137	0.025		31.4	32.0	32.6	33.1	33.7	34.2	34.7