Preterm birth and reduced birthweight in first and second teenage pregnancies: a register-based cohort study.
AffiliationAnu Research Centre, Department of Obstetrics and Gynaecology, University College Cork, Cork, Ireland. firstname.lastname@example.org.
Confounding Factors (Epidemiology)
Infant, Small for Gestational Age
Obstetric Labor, Premature
Pregnancy in Adolescence
MetadataShow full item record
CitationPreterm birth and reduced birthweight in first and second teenage pregnancies: a register-based cohort study. 2010, 10:36 BMC Pregnancy Childbirth
JournalBMC pregnancy and childbirth
AbstractBACKGROUND: Higher risks of preterm birth and small for gestational age babies have been reported in teenagers. The aim of this study was to investigate the relationship between first and second teenage pregnancies and preterm birth, birthweight and small for gestational age (SGA). METHODS: All women aged 14 to 29 yrs who gave birth to live singletons in the North Western Region of England between January 1st 2004 and December 31st 2006 were identified. Women were classified in three groups; 14-17 yrs, 18-19 yrs and 20-29 yrs (reference group). The outcome measures were preterm birth, very preterm birth, birthweight, SGA (< 5th percentile), very SGA (VSGA< 3rd percentile). We compared these outcome measures in teenagers' first and second pregnancies with those of mothers aged 20 to 29 yrs. RESULTS: The risk of preterm birth was increased in first (OR = 1.21, [95% CI: 1.01-1.45]) and second (OR = 1.93, [95% CI: 1.38-2.69]) time mothers aged 14-17 yrs compared to the reference group. Birthweight was reduced in the first (mean difference = -24 g; [95% CI: -40, -7]) and second (mean difference = -80 g; [95% CI: -115, -46]) time mothers aged 14-17 yrs compared to the reference group. There was some evidence of a protective effect against VSGA in 14-17 yr old first time mothers (OR = 0.79, [95% CI: 0.63-0.99]). CONCLUSIONS: Teenage mothers are at increased risk of preterm birth compared to adult mothers and this risk is further increased in second time teen pregnancies. This study highlights the importance of ensuring pregnant teenagers have appropriate antenatal care. A first pregnancy may be the first and only time a pregnant teenager interacts with health services and this opportunity for health education and the promotion of contraception should not be overlooked.
- The impact of maternal celiac disease on birthweight and preterm birth: a Danish population-based cohort study.
- Authors: Khashan AS, Henriksen TB, Mortensen PB, McNamee R, McCarthy FP, Pedersen MG, Kenny LC
- Issue date: 2010 Feb
- [Obstetrical outcome in teenage pregnancies in The Netherlands].
- Authors: Buitendijk SE, van Enk A, Oosterhout R, Ris M
- Issue date: 1993 Dec 4
- [Risk factors for low birth weight and intrauterine growth retardation in Santiago, Chile].
- Authors: Vega J, Sáez G, Smith M, Agurto M, Morris NM
- Issue date: 1993 Oct
- Increased risk of preterm births among women with uterine leiomyoma: a nationwide population-based study.
- Authors: Chen YH, Lin HC, Chen SF, Lin HC
- Issue date: 2009 Dec
- Teenage pregnancy and the influence of paternal involvement on fetal outcomes.
- Authors: Alio AP, Mbah AK, Grunsten RA, Salihu HM
- Issue date: 2011 Dec