Neonatal outcomes in relation to sex differences: a national cohort survey in Taiwan

Table 1 Gestational age (GA) in relation to sex ratio and neonatal outcomes among 1,973,767 singleton live births

GA (w)	Total			Neonatal death		Congenital anomaly		Low birth weight		Macrosomia
GA (w)	Male (n)	Female (n)	Sex ratio	%	Sex ratio	%	Sex ratio	%	Sex ratio	%	Sex ratio
≤24	804	666	1.207	77.48	1.320*	15.99	1.136	100	1.207	0.00	–
25	386	285	1.354	47.24	1.331	5.07	0.700*	100	1.354	0.00	–
26	455	316	1.440	31.00	1.276	4.67	1.118	100	1.440	0.00	–
27	540	438	1.233	22.29	1.396	3.48	0.789	100	1.233	0.00	–
28	683	534	1.279	14.71	1.594	3.12	0.652*	100	1.279	0.00	–
29	791	580	1.364	9.34	1.909	2.70	0.947	100	1.364	0.00	–
30	1145	881	1.300	5.92	1.400	2.86	1.148	99.70	1.298	0.00	–
31	1405	1032	1.361	4.10	1.273	2.95	1.483	98.89	1.358	0.00	–
32	2218	1581	1.403	2.21	1.270	2.47	1.410	95.97	1.408	0.00	–
33	3388	2371	1.429	1.96	1.457	1.86	1.432	88.82	1.384*	0.00	–
34	6298	4656	1.353	1.52	1.169	1.53	1.000*	72.08	1.222*	0.09	2.333
35	14,090	10,293	1.369	0.78	1.436	1.22	1.339	44.89	1.084*	0.32	1.026
36	42,246	31,262	1.351	0.35	1.421	0.79	1.750*	21.14	0.910*	0.64	1.597
37	139,442	109,431	1.274	0.17	1.434	0.56	1.455*	7.61	0.740*	0.99	1.876*
38	295,342	253,577	1.165	0.11	1.557*	0.45	1.521*	3.28	0.643*	1.45	2.173*
39	291,920	279,557	1.044	0.09	1.309*	0.43	1.394*	1.73	0.536*	2.18	2.053*
40	189,884	198,222	0.958	0.09	0.955	0.46	1.250*	0.96	0.521*	3.70	1.821*
41	38,268	42,722	0.896	0.13	0.946	0.59	1.154*	0.69	0.508*	5.65	1.669*
≥42	2933	3125	0.939	0.25	1.143	0.79	1.000	1.29	0.560*	8.40	1.495*
Total	1,032,238	941,529	1.096	0.27	1.341*	0.53	1.379*	5.31	0.863*	2.17	1.922*

ISSN: 2042-6410