Impact of early term and late preterm birth on infants’ neurodevelopment: evidence from a cohort study in Wuhan, China

Table 1 Distribution of demographic characteristics of participants

Variables	Late Preterm (34–36wks)		Early Term (37–38wks)		Full Term (39–41wks)		Total		P
Variables	n/mean	%/SD	n/mean	%/SD	n/mean	%/SD	n/mean	%/SD	P
*Mothers’ education*									< 0.01
Below bachelor	113	72.90	847	65.76	1731	61.82	2691	63.42
Bachelor or above	42	27.10	441	34.24	1069	38.18	1552	36.58
*Fathers’ education*									< 0.01
Below bachelor	108	69.68	830	64.44	1641	58.61	2579	60.78
Bachelor or above	47	30.32	458	35.56	1159	41.39	1664	39.22
*Number of prenatal examinations*	7.86	2.47	9.04	2.34	9.28	2.48	9.15	2.45	< 0.01
*Parity*									< 0.01
1	127	81.94	1126	87.42	2630	93.93	3883	91.52
≥ 2	28	18.06	162	12.58	170	6.07	360	8.48
*Mode of delivery*									< 0.01
Vaginal	54	34.84	289	22.44	717	25.61	1060	24.98
Caesarean	101	65.16	999	77.56	2083	74.39	3183	75.02
*Gender*									< 0.01
Boy	105	67.74	759	58.93	1513	54.04	2377	56.02
Girl	50	32.26	529	41.07	1287	45.96	1866	43.98
*Birth Weight (g)*									< 0.01
< 2500	64	41.29	39	3.03	19	0.68	122	2.88
2500–3999.9	91	58.71	1213	94.18	2568	91.71	3872	91.26
≥ 4000	0	0.00	36	2.80	213	7.61	249	5.87
*Neonatal asphyxia*
No	149	96.13	1275	98.99	2771	98.96	4195	98.87	< 0.01
Yes	6	3.87	13	1.01	29	1.04	48	1.13
*Feeding Pattern*									0.09
Breast feeding	86	55.48	784	60.87	1741	62.18	2611	61.54
Mixed feeding	49	31.61	369	28.65	823	29.39	1241	29.25
Powder milk	20	12.90	135	10.48	236	8.43	391	9.22

ISSN: 1471-2431