Table 2.

Pregnancy outcomes of deliveries in multiparous adolescents compared with nulliparous adolescents, 1st January 2009 to 31st December 2016

Delivery outcomes	Primiparas		Multiparas		Odds ratios	95% CI	p-value
	N 285	% (78.5)	N 78	% (21.5)
Preterm delivery
Yes	85	33.2	17	23.0	1.7	0.9–3.0	0.06
No	171	66.8	57	77.0
Operative deliverya
Yes	1	0.4	0	0.0	–	–
No	283	99.6	78	100
Perineal tearsb
Yes	24	8.4	8	10.3	1.2	0.5–2.9	0.4
No	261	91.6	70	89.7
Low birth weightc
Yes	43	15.5	4	5.3	3.3	1.1–9.5	0.01
No	235	84.5	72	94.7
Neonatal asphyxiad
Yes	28	10.0	10	13.2	0.7	0.3–1.6	0.3
No	251	90.0	66	86.8
Stillbirth
Yes	5	1.8	1	1.3	0.7	0.08–6.3	0.6
No	279	98.2	77	98.7
Post-term deliveriese
Yes	14	5.5	8	10.8	0.4	0.2–1.2	0.09
No	242	94.5	66	89.2
High birth weightf
Yes	7	2.5	2	2.6	1.0	0.2–4.7	0.6
No	271	97.5	74	97.4

^aOperative deliveries: Caesarean sections

^bPerineal tears: second—fourth degree tears

^cLBW: birth weights ≤ 2600 g [14]

^dNeonatal asphyxia: fifth minute APGAR score < 8

^ePost-term deliveries: deliveries at gestational age < 42 completed weeks

^fHigh birth weight: birth weights ≥ 3850 g [15]