The effect of gestational age errors and their correction in interpreting population trends in fetal growth and gestational age-specific mortality†
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Cited by (10)
Development of a birthweight standard and comparison with currently used standards. What is a 10th centile?
2016, European Journal of Obstetrics and Gynecology and Reproductive BiologyCitation Excerpt :The premature outliers peak near 30 weeks [16,18], which may be explained by a character typo (random interchange of 2, 3 or 4 in the first character). A small percentage of, e.g., 39 weeks’ newborns erroneously classified as 29 weeks would have a large effect on centiles whereas the opposite would have a negligible effect, because of the much larger sample size at term [18]. We combined a mathematical method (Tukey’s) with expert opinion for outlier detection, which allowed for interpretation, rather than cutoff based exclusion.
Growth curves: How to best measure growth of the preterm infant
2013, Journal of PediatricsCitation Excerpt :Errors in gestational age appear to be magnified at lower gestational ages. This is especially true if an obstetric estimate of gestational age is not available because an obstetrician's estimate is closer to actual age than a neonatologist's estimate in the delivery room.20 Ultrasound imaging studies of the fetus coupled with good maternal dating and history have been used to estimate gestational age and weight in longitudinal and cross-sectional studies.21,22
Fetal growth risk curves: Defining levels of fetal growth restriction by neonatal death risk
2006, American Journal of Obstetrics and GynecologyCitation Excerpt :Because this analysis was restricted to gestational ages 25 to 42 weeks and the analysis of cases with consistent birth weight–gestational age values, birth certificates with gross inaccuracies have been addressed. Nevertheless, the identification of inconsistent birth weight–gestational age combinations is imprecise, and some errors in gestational age coding may remain.25-27 The impact of inaccurate dating is most apparent at the extremes of the gestational age spectrum and is associated with an overestimation of preterm rates and an underestimation of postterm rates, when compared with ultrasonographic estimates of gestational age.
The use of United States vital statistics in perinatal and obstetric research
2006, American Journal of Obstetrics and GynecologyCitation Excerpt :With the birth certificate revision of 1989, a clinical estimate of gestation that may improve the situation to some extent was added, although the clinical estimate is not reported for births occurring in California. More detailed descriptions of the issues associated with the reporting of gestation on the birth certificate and potential methods to address those problems abound.12-16 Although there is no single correct solution to the problem, consideration of accuracy of gestational age reporting is essential for analyses using vital statistics data to examine preterm birth; methods used to address those inconsistencies should be clearly stated in any analysis.
Nutrition, growth and clinical outcomes
2014, World Review of Nutrition and Dietetics
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This work was supported in part by grants from the Canadan Institutes of Health Research, the Natural Sciences and Engineering Research Council of Canada, by the Fonds de Récherche en Santé du Quebec, and by the Institut National de Santé et de Recherche Médicale (INSERM) of France. R.W.P. is a Scholar of the Canadian Institutes of Health Research.