Outborn n=49	Inborn n=396	Univariable OR (95% CI)	P=	Adjusted OR (95% CI)	P=
Grade 1 or 2	13 (27%)	96 (24%)	1.13 (0.57 to 2.21)	0.73	1.11 (0.56 to 2.23)	0.76
Grade 3 or 4	10 (20%)	42 (11%)	2.16 (1.01 to 4.64)	0.048	2.99 (1.28 to 6.98)	0.012