Table 1. Mode of delivery in correlation to birth weight (BW) and weeks of gestation (WG) in singleton (S) and twins (T) delivery, Vaginal delivery (VD), Caesarean section (CS).

BW WG	VD		CS		χ2	P	OR	95% CI
<999	N=59		N= 33
<28	47		18		0.34	0.562	0.47	0.10-2.36
28-32	11		14		0.09	0.770	0.80	0.35-1.87
<28	S	T	S	T	1.20	0.274	2.44	0.70-8.43
	39	8	12	6
28-32	11	0	13	1	Fisher	0.56	-	-
1000-1499	N=48		N= 64
<28	10		1		1.10	0.295	4.17	0.50-34.74
28-32	30		39		0.87	0.351	0.72	0.40-1.30
33-37	8		24		10.56	0.0012	3.75	1.61-9.73
28-32	23	7	29	10	0.00	1.000	1.13	0.37-3.44
33-37	7	1	13	11	1.6	0.206	5.92	0.63-56.85
1500-1999	N=88		N= 118
28-32	42		38		0.53	0.465	1.29	0.73-2.28
33-37	45		80		23.16	<0.0001	2.56*	1.71-3.85
28-32	27	15	22	16	0.13	0.722	1.31	0.53-3.23
33-37	34	11	45	35	3.82	0.05	2.4	1.07-5.41
2000-2499	N=168		N= 204
28-32	11		8		0.87	0.351	0.72	0.40-1.30
33-37	157		195		10.56	0.0012	3.75	1.61-9.73
28-32	11	0	7	1	Fisher	0.842	-	-
33-37	131	26	118	77	20.99	<0.0001	3.29	1.93-5.70
>2500	N=473		N= 265
33-37	471		263		62.73	<0.0001	2.55	2.02-3.21
33-37	444	27	179	84	89.02	<0.0001	7.77	4.87-12.39