Table 2. Multivariate regression analysis of associations between OCR and clinical parameters.

	Coefficients1
	Unstandardized coefficients
Model	B	S.E.M.	t	P-value
Baseline
(Constant)	4.213	0.689	6.110	<0.001
Pregnancy group	2.004	0.625	3.205	0.003
EGA	0.956	0.609	1.570	0.125
Parity	−0.358	0.574	−0.624	0.537
Maximal respiratory capacity
(Constant)	5.387	1.496	3.601	<0.001
Pregnancy group	4.808	1.357	3.544	0.001
EGA group	2.241	1.321	1.697	0.098
Parity	0.0278	1.245	0.0224	0.982
ATP-linked respiration
(Constant)	3.101	0.563	5.507	<0.001
Pregnancy group	1.793	0.511	3.511	0.001
EGA group	0.775	0.497	1.558	0.128
Parity	−0.396	0.469	−0.845	0.404
Spare respiratory capacity
(Constant)	1.174	0.896	1.311	0.198
Pregnancy group	2.804	0.812	3.451	0.001
EGA group	0.775	0.791	1.626	0.113
Parity	0.386	0.746	0.517	0.608
RCR
(Constant)	5.139	0.764	6.730	<0.001
Pregnancy group	2.607	0.692	3.765	<0.001
EGA group	0.783	0.674	1.161	0.253
Parity	−0.227	0.635	−0.357	0.723

¹Dependent variable: OCR.