. Author manuscript; available in PMC: 2018 Nov 23.

Published in final edited form as: Pediatr Res. 2018 May 23;84(1):85–91. doi: 10.1038/s41390-018-0021-0

Table 3.

Multivariable Regression Coefficients for Perinatal Clinical Features and rMSSD at Birth

	rMSSD
	B	95% CI	p-value
Maternal smoking	-3.29	-14.98-8.39	0.58
Antenatal steroids	0.11	-0.02-0.24	0.58
Caesarean section	3.63	-7.16- -0.10	0.04
Apgar score at 5 mins	0.20	-2.06-2.46	0.86
Days of oxygen	0.16	-1.04-1.36	0.80
Postnatal infection	-1.28	-7.69-5.13	0.69

B unstandardized coefficient presented with 95% CI after correcting for postmenstrual age at assessment (gestational age at birth plus age at assessment) and offspring sex

rMSSD root mean square of the difference between adjacent NN intervals