scholarly journals Birth weight patterns by gestational age in Brazil

2011 ◽  
Vol 83 (2) ◽  
pp. 619-625 ◽  
Author(s):  
Carlos E. Pedreira ◽  
Francisco A. Pinto ◽  
Silvia P. Pereira ◽  
Elaine S. Costa
Keyword(s):  
Birth Weight ◽  
Sample Size ◽  
Gestational Age ◽  
Graphical Representation ◽  
Population Based ◽  
Specific Reference ◽  
Large Sample Size ◽  
Population Based Study ◽  
And Gender ◽  
Gender Specific

BACKGROUND AND OBJECTIVES: We present an updated birth weight-for-gestational-age portrait, based on nearly 8 million observations of an ethnic-mixed population. It comprises the first comprehensive charts with Brazilian data. This contribution intends to assist clinicians in classifying fetal growth, to provide a reference for investigations of predictors and to show the consequences of small and large patterns for gestational age delivery. Most of the reference data for assessing birth weight for gestational age deal with insufficient sample size, especially at low gestational age. Population-based studies with considerably large sample size refer to data collected more than 15 years ago. METHODS: We accomplished a population-based study on births in all the Brazilian states from 2003 to 2005. Results were based on 7,993,166 singletons. We constructed the 3rd, 5th, 10th, 25th, 50th, 90th, 95th and 97th smoothed percentiles curves and gender-specific tables from 22 to 43 completed weeks. RESULTS: The resulting tables and graphical representation provide a gender-specific reference to access the birth weights distribution according to the gestational age in the Brazilian population. CONCLUSIONS: This is the first population-based reference constructed on a developing country data. These charts could provide an important tool to improve clinical assessment of growth in newborns.

FOUR-SITE SKINFOLDS THICKNESS PERCENTILES of SCHOOLCHILDREN and ADOLESCENTS in TURKEY

2021 ◽  
pp. 1-28
Author(s):  
Meltem Soylu ◽  
Nazlı Şensoy ◽  
İsmet Doğan ◽  
Nurhan Doğan ◽  
Mümtaz M. Mazicioğlu ◽  
...  
Keyword(s):  
Body Fat ◽  
Skinfold Thickness ◽  
Population Based ◽  
Specific Reference ◽  
Fat Percentage ◽  
Cross Sectional ◽  
Lms Method ◽  
And Gender ◽  
Thickness Measurements ◽  
Gender Specific

Abstract Objective: The primary purpose of this study was to establish Turkish smoothed centile charts and LMS tables for four-site skinfold thickness based on a population-based sample and secondary purpose was to elaborate a reference for the percentage of body fat. Design: A cross-sectional and descriptive study was conducted between January and May 2017. Triceps, biceps and subscapular, suprailiac skinfold thickness were measured using Holtain skinfold caliper. Age and gender specific percentile values were determined with the LMS method, and body fat percentage was calculated using the Westrate and Deurenberg equation. Setting: Afyonkarahisar province in Turkey. Participants: This study was conducted on 4565, 6-18 years old students. Results: The triceps, biceps, and subscapular skinfolds of the girls were higher than the boys. From the age of seven, the sum of four skinfold thicknesses of the girls was more than those of the boys. This difference became more evident after the age of 12. Although fat percentages of girls showed a fluctuating change, it decreased with the age in boys. Westrate and Deurenberg equation fat percentages of girls until adolescence were lower than boys, but increased after 12 years of age and exceeded that of boys. Conclusions: This study has provided sex and age specific reference values for skinfold thickness, and has shown that obesity in girls is higher than in boys in schoolchildren in Afyonkarahisar. This study has also shown that skinfold thickness measurements are a valuable tool for screening obesity in children.

Associations of Birth Weight for Gestational Age with Child Health and Neurodevelopment among Term Infants: A Nationwide Japanese Population-Based Study

2020 ◽  
Vol 226 ◽  
pp. 135-141.e4
Author(s):  
Kei Tamai ◽  
Takashi Yorifuji ◽  
Akihito Takeuchi ◽  
Yu Fukushima ◽  
Makoto Nakamura ◽  
...  
Keyword(s):  
Birth Weight ◽  
Child Health ◽  
Gestational Age ◽  
Japanese Population ◽  
Population Based ◽  
Term Infants ◽  
Population Based Study

Birth weight by gestational age and risk of childhood acute leukemia: a population-based study 1961–2002

2011 ◽  
Vol 52 (4) ◽  
pp. 709-712 ◽  
Author(s):  
Svetlana V. Glinianaia ◽  
Mark S. Pearce ◽  
Judith Rankin ◽  
Tanja Pless-Mulloli ◽  
Louise Parker ◽  
...  
Keyword(s):  
Birth Weight ◽  
Acute Leukemia ◽  
Gestational Age ◽  
Population Based ◽  
Population Based Study ◽  
Childhood Acute Leukemia

Age- and Gender-Specific Rate of Fractures in Australia: A Population-Based Study

1999 ◽  
Vol 10 (3) ◽  
pp. 240-247 ◽  
Author(s):  
K. M. Sanders ◽  
E. Seeman ◽  
A. M. Ugoni ◽  
J. A. Pasco ◽  
T. J. Martin ◽  
...  
Keyword(s):  
Population Based ◽  
Specific Rate ◽  
Age And Gender ◽  
Population Based Study ◽  
And Gender ◽  
Gender Specific

scholarly journals Preterm Birth, Low Gestational Age, Low Birth Weight, Parity, and Other Determinants of Breech Presentation: Results from a Large Retrospective Population-Based Study

2019 ◽  
Vol 2019 ◽  
pp. 1-6
Author(s):  
Stefania Antonia Noli ◽  
Ilaria Baini ◽  
Fabio Parazzini ◽  
Paola Agnese Mauri ◽  
Michele Vignali ◽  
...  
Keyword(s):  
Birth Weight ◽  
Preterm Birth ◽  
Gestational Age ◽  
Maternal Age ◽  
Breech Presentation ◽  
Population Based ◽  
Previous Cesarean Section ◽  
Population Based Study ◽  
Main Determinants ◽  
Previous Cesarean

Aim of this study is to analyze determinants of breech presentation using information from two regional databases of Lombardy (Italy) including data on consecutive singleton breech and vertex deliveries occurred in the Region, between January 2010 and December 2015. Breech presentation occurred in 3.8% of all single deliveries. Main determinants of breech presentation at birth were: gestational age and birth weight (the lower, the higher the incidence of breech presentation), maternal age (the older the mother, the higher the risk of breech presentation), parity (the frequency of breech decreased with increasing parity) and previous cesarean section. Breech presentation resulted more frequent after assisted reproduction procedures.

Customized versus Population-Based Birth Weight References for Predicting Fetal and Neonatal Undernutrition

2015 ◽  
Vol 39 (3) ◽  
pp. 198-208 ◽  
Author(s):  
Juan Jesús Fernández-Alba ◽  
Carmen González-Macías ◽  
Raquel León del Pino ◽  
Fabiana Prado Fernandes ◽  
Carolina Lagares Franco ◽  
...  
Keyword(s):  
Birth Weight ◽  
Pregnant Women ◽  
Gestational Age ◽  
Predictive Value ◽  
Population Based ◽  
Maternal Weight ◽  
Gestational Age At Delivery ◽  
Preterm Babies ◽  
And Gender ◽  
Singleton Pregnancies

Objectives: The aim of our study was to construct a model of customized birth weight curves based on a Spanish population and to compare the ability of this customized model to our population-based chart to predict a neonatal ponderal index (PI) <10th percentile. Methods: We developed a model that can predict the 10th percentile for a fetus according to gestational age and gender as well as maternal weight, height, and age. We compared the ability of this customized model to that of our own population-based model to predict a neonatal PI <10th percentile. Data from a large database were used (32,854 live newborns, from 1993 through 2012). Only singleton pregnancies with a gestational age at delivery of 32-42 weeks were included. Results: In the entire pregnant population, the customized method was superior to the population-based method for detecting newborns with a PI <10th percentile (sensitivity: 55 vs. 40.96%; specificity: 99.6 vs. 91.23%; positive predictive value: 11.49 vs. 9.55%, and negative predictive value: 98.84 vs. 98.55%, respectively). In pregnant women with a BMI >90th percentile, the sensitivity was 75%, compared to 50% in the population-based method. In pregnant women with a height >90th percentile, the sensitivity was almost as high as in the population-based method (61.53 vs. 33.33%). Conclusion: The customized birth weight curve is superior to the population-based method for the detection of newborns with a PI <10th percentile. This is especially the case in women in the higher scales of height and weight as well as in preterm babies.

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