Table 2.

Type of delivery section according to gestational age in SGA and AGA infants

		SGA delivery		AGA Delivery		Risk Ratio for caesarean section AGA/SGA
		Caesarean	Vaginal delivery	Caesarean	Vaginal delivery	RR [95% CI]
Gestational age (weeks)	[22–28[ (N = 1,213)	34.0%	66.0%	22.6%	77.4%	1.75 [1.37; 2.27]
	[28–32[ (N = 3,346)	46.7%	53.3%	29.7%	70.3%	2.08 [1.79; 2.44]
	[32–37[ (N = 29,165)	35.3%	64.7%	17.9%	82.1%	2.5 [2.38; 2.63]
	[37–39[ (N = 101,974)	19.9%	80.1%	15.9%	84.1%	1.32 [1.27; 1.37]
	[39–43[ (N = 344,750)	14.8%	85.2%	12.1%	87.9%	1.25 [1.22; 1.28]

SGA Small for Gestational Age; AGA Appropriate for Gestational Age