Table 3.

Cesarean rates for twins in the United States 1995 to 2008 – by maternal and neonatal factors.

	Year	GA < 37	GA >=37	Small for GA		Hypertension		Diabetes		Fetal distress		CPD		Previous C/S		Induction
				Yes	No	Yes	No	Yes	No	Yes	No	Yes	No	Yes	No	Yes	No
	N	971,438	708,505	561,550	1,118,393	170,096	1,523,235	76,556	1,616,775	40,947	1,374,889	8,074	1,407,762	221,889	1,470,372	199,586	1,493,745
Cesarean delivery rate (%)	1995	54.7	52.9	52.7	54.5	63.7	52.9	61.7	53.6	74.8	53.1	95.4	53.5	89.5	48.9	26.3	57.4
	1996	54.9	51.8	52.4	54.0	63.1	52.4	61.7	53.1	72.1	52.7	92.5	53.0	87.9	48.6	25.5	57.4
	1997	54.9	52.8	52.6	54.6	64.3	52.8	62.5	53.6	72.5	53.3	92.6	53.6	88.9	49.0	23.6	58.6
	1998	56.5	53.1	53.7	55.7	63.7	54.1	63.6	54.7	73.5	54.3	91.6	54.7	90.2	50.2	26.0	59.7
	1999	57.2	54.8	55.3	56.6	65.4	55.2	63.0	55.9	74.1	55.5	94.6	55.9	90.9	51.4	25.5	61.0
	2000	59.6	56.5	57.3	58.8	67.3	57.3	66.2	58.0	74.8	57.7	91.5	58.0	92.7	53.4	26.5	63.3
	2001	62.0	59.5	59.8	61.4	70.6	59.8	69.1	60.6	76.8	60.4	95.2	60.7	94.8	56.0	26.9	65.9
	2002	64.7	62.3	62.5	64.3	73.1	62.6	71.2	63.3	78.0	63.2	93.4	63.5	95.9	58.9	28.9	68.5
	2003	67.6	65.0	65.6	67.1	74.9	65.7	73.5	66.3	78.7	66.3	96.1	66.5	96.8	62.0	29.5	71.3
	2004	70.2	67.9	68.7	69.6	77.9	68.3	75.9	69.0	81.3	69.0	95.4	69.2	97.2	65.1	30.7	74.1
	2005	72.4	69.4	70.3	71.6	78.8	70.3	79.2	70.8	80.9	71.0	94.9	71.1	97.6	67.0	31.0	76.1
	2006	74.0	71.3	72.2	73.3	80.5	72.0	79.6	72.5	81.1	72.8	95.9	72.9	97.0	69.0	31.1	77.7
	2007	75.3	72.8	73.7	74.6	81.0	73.5	81.1	73.9					97.4	70.3	31.4	78.9
	2008	76.3	73.2	74.2	75.5	81.9	74.2	81.0	74.6					97.6	71.1	32.5	79.7