Breastfeeding and cortisol in hair in children

Table 1 Sociodemographic data and characteristics for the participants (n = 126) in relation to the whole cohort at 8 years follow up (n = 3905)

Variables	Participants N = 126		8 years cohort n = 3905		p-value
Variables	n	%	n	%	p-value
Gender (children)					0.06
Boys	56	44.4	2065	52.9
Girls	70	55.6	1840	47.1
Mother education
Low	34	27.0	1177	30.5	0.34
Medium	44	34.9	1119	29.0
High	48	38.1	1563	40.5
Father education
Low	40	32.8	1222	31.9	0.43
Medium	52	42.6	1469	38.3
High	30	24.6	1142	28.9
Custody at 8 years
Mother and father	111	90.2	3443	89.9	0.90
Single parent	4	3.3	107	2.8
Joint custody	8	6.5	279	7.3
Mother born abroad					< 0.01
yes	18	14.3	191	4.9
No	108	85.7	3678	95.1
Father born abroad					0.14
Yes	10	7.9	193	5.0
No	116	92.1	3669	95.0
Duration of breastfeeding					0.22
Until 1 month	7	5.6	102	3.3
2–6 months	22	17.7	682	21.9
7 months or more	95	76.6	2333	74.8
Birth weight					0.92
Low	12	9.5	385	10.0
Normal	100	79.4	3089	80.0
High	14	11.1	387	10.0
Gestational age
Early	11	8.8	310	8.1	0.97
Normal	112	89.6	3435	90.2
Over time	2	1.6	63	1.7
Type of delivery					0.83
Vaginal	104	83.2	3176	82.8
Caesarean section	13	10.4	450	11.7
Suction cup	8	6.4	209	5.4
Mother parity					0.74
Primipara	53	42.4	1580	40.9
Multipara	72	57.6	2281	59.1
Age of mother at delivery
16–20 years	2	1.6	29	0.7	0.02
21–35 years	98	78.4	3389	86.8
> 35 years	25	20.0	486	12.4
Mother smoking during pregnancy					0.54
Yes	6	4.8	237	6.1
No	119	95.2	3624	93.9
Early psychosocial vulnerability factors in the family					0.50
None	49	40.2	1685	45.1
Low	49	40.2	1462	39.1
Medium	24	19.7	578	15.5
High	–	0.0	11	0.3

ISSN: 1746-4358