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- Title
When is birthweight at term (≥37 weeks' gestation) abnormally low? A systematic review and meta-analysis of the prognostic and predictive ability of current birthweight standards for childhood and adult outcomes.
- Authors
Malin, GL; Morris, RK; Riley, RD; Teune, MJ; Khan, KS
- Abstract
Background Health outcomes throughout the life course have been linked to fetal growth restriction and low birthweight. A variety of measures exist to define low birthweight, with a lack of consensus regarding which predict adverse outcome. Objectives To evaluate the relationship between birthweight standards and childhood and adult outcomes in term-born infants (≥37 weeks' gestation). Search strategy MEDLINE (1966-January 2011), EMBASE (1980-January 2011), and the Cochrane Library (2011:1) and MEDION were included. Selection criteria Studies comprising live term-born infants (gestation ≥37 completed weeks), with weight or other anthropometric measurements recorded at birth along with childhood and adult outcomes. Data collection and analysis Data were extracted to populate 2 × 2 tables relating birthweight standard with outcome, and meta-analysis was performed where possible. Main results Fifty-nine articles (2 600 383 individuals) were selected. There was no significant relationship between birthweight <2.5 kg (odds ratio [ OR] 0.98, 95% confidence intervals [ CI] 0.87-1.10) and composite measure of childhood morbidity. Weight <10th centile on the population nomogram showed a small association ( OR 1.49, 95% CI 1.02-2.19) for the same outcome. There was no significant association between either of the above measures and adult morbidity. The relationship between other measures and individual outcomes varied. Author's conclusions The association between low birthweight, by any definition, and childhood and adult morbidity was inconsistent. None of the current standards of low birthweight was a good predictor of adverse outcome.
- Subjects
FETAL development; BIRTH weight; NEWBORN infants; CHILDBIRTH at home; DELIVERY (Obstetrics)
- Publication
BJOG: An International Journal of Obstetrics & Gynaecology, 2015, Vol 122, Issue 5, p634
- ISSN
1470-0328
- Publication type
Article
- DOI
10.1111/1471-0528.13282