Table 1

Sociodemographic characteristics of term, preterm and very preterm population

	Gestation at birth
	<32 weeks		32–36 weeks		37 or more weeks		Total
	Number	Per cent	Number	Per cent	Number	Per cent	Number	Per cent
Median (IQR) maternal age	33.5 (28, 37.5)		31 (28, 35)		31 (27, 35)		31 (27, 35)
Index of multiple deprivation
1 (least deprived)	9	21.4	45	18.5	822	19.7	876	19.6
2	7	16.7	42	17.3	797	19.1	846	19.0
3	7	16.7	50	20.6	858	20.6	915	20.5
4	12	28.6	53	21.8	897	21.5	962	21.6
5 (most deprived)	7	16.7	53	21.8	801	19.2	861	19.3
Black or minority ethnic group	5	12.5	46	19.5	638	15.7	689	15.9
Born in the UK	37	88.1	183	75.3	3184	76.3	3404	76.3
Primiparous*	21	55.3	137	58.8	2001	49.4	2159	49.9
Left full-time education aged <17 years*	9	23.1	54	22.5	666	16.2	729	16.6
Single mother	7	16.7	33	13.6	519	12.4	559	12.5
Birthweight <2500 g**	38	95.0	133	57.1	158	3.9	329	7.5
Multiple birth**	4	9.5	34	14.0	36	0.9	74	1.6
Admitted to neonatal unit**	39	100.0	143	62.4	352	9.4	534	13.3
Median (IQR) duration in neonatal unit (days)	49 (28, 74)		11 (3, 20)		2.1 (0.3, 6)		4 (1, 12)
Still in neonatal unit at time of the survey**	4	10.3	2	1.4	6	1.7	12	2.2
Mothers of NNU babies stayed in hospital after discharge**	24	63.2	82	59.4	136	43.2	242	49.3
Mode of delivery**
Normal vaginal	22	66.7	99	47.8	2456	61.5	2577	60.9
Instrumental	0	0.0	37	17.9	614	15.4	651	15.4
Planned caesarean	5	15.2	39	18.8	421	10.5	465	11.0
Unplanned caesarean	6	18.2	32	15.5	504	12.6	542	12.8
Soon after birth mother able to…
Hold baby**	7	16.7	171	71.5	3745	90.9	3923	89.1
Skin-to-skin**	5	11.9	153	63.7	3597	87.3	3755	85.3
Breastfeed**	4	9.5	117	50.4	3130	76.5	3251	74.5