Table 4.

Associations of the course of neonatal hair glucocorticoid concentrations with perinatal and maternal factors.

		Effect on delta		Effect on OPV values
		β (95% CI)	P value	β (95% CI)	P value
Perinatal factors
Gestational age	Cortisol	−0.02 (−0.05 to 0.00)	0.08	0.08 (0.04 to 0.12)	<0.001
	Cortisone	−0.006 (−0.013 to 0.001)	0.08	0.00 (−0.04 to 0.04)	0.87
Birth weight (in kg)	Cortisol	−0.05 (−0.12 to 0.02)	0.19	0.13 (0.003 to 0.26)	0.05
	Cortisone	−0.02 (−0.03 to 0.01)	0.15	0.00 (−0.12 to 0.12)	0.96
Male sex	Cortisol	0.02 (−0.07 to 0.11)	0.68	0.19 (0.02 to 0.36)	0.03
	Cortisone	−0.01 (−0.03 to 0.02)	0.46	0.00 (−0.14 to 0.13)	0.99
Delivery via caesarian section	Cortisol	0.06 (−0.04 to 0.16)	0.24	−0.06 (−0.25 to 0.13)	0.55
	Cortisone	0.03 (0.01 to 0.05)	0.02	−0.08 (−0.23 to 0.08)	0.33
Perinatal infection (≥7 days antibiotics)	Cortisol	−0.06 (−0.15 to 0.04)	0.25	−0.04 (−0.22 to 0.14)	0.66
	Cortisone	−0.03 (−0.05 to −0.004)	0.02	0.12 (−0.03 to 0.27)	0.11
Maternal factors
Parity	Cortisol	0.07 (−0.02 to 0.16)	0.11	−0.11 (−0.28 to 0.05)	0.18
	Cortisone	0.01 (−0.01 to 0.03)	0.32	0.01 (−0.13 to 0.14)	0.91

Values represent log-transformed β (95% confidence interval) as calculated with linear regression. All associations were corrected for age at the OPV.