scholarly journals Factors Affecting Birthweight Decline in Recent Japan Based on Birth Certificates

2020 ◽  
Author(s):  
Noriko Kato ◽  
Catherine Sauvaget ◽  
Honami Yoshida ◽  
Tetsuji Yokoyama ◽  
Nobuo Yoshiike
Keyword(s):  
Birth Order ◽  
Gestational Age ◽  
Maternal Diet ◽  
Linear Regression Analysis ◽  
Vital Statistics ◽  
Birth Certificates ◽  
Factors Affecting ◽  
New Information ◽  
Multivariable Linear Regression Analysis ◽  
Birth Records

Abstract Background:Birthweight is declining consistently for more than 30 years in Japan. Rapid rise in low birth weight infant counts one of the worst among OECD countries.Objective: To add new information for clarifying the factors associated with the decline in birthweight in Japan.Methods: Government vital statistics records were used under permission. 40,968,266 birth records born between 1980 and 2004 were analyzed. Multivariable linear regression analysis was used to examine whether the decline in the birthweight could be explained by obstetrical variables such as gestational age and plurality.Results: From 1980 to 2004, we observed a decline in mean birthweight with yearly effect of -8.07g, which got steeper after 1985 and persisted until 1999, and plateaued thereafter. After adjustment for gestational age, neonatal gender, birth order, plurality, father age, yearly effect became -5.13g, between 1980 and 2004. Conclusion：Recent decreases in birthweight among Japanese neonates were not fully explained by trends of gestational age, sex, birth order, plurality and father age. We should consider additional factors such as pre-pregnant maternal BMI and maternal diet.

Factors affecting birthweight decline in recent Japan based on birth certificates

2020 ◽  
Author(s):  
Noriko Kato ◽  
Catherine Sauvaget ◽  
Honami Yoshida ◽  
Tetsuji Yokoyama ◽  
Nobuo Yoshiike
Keyword(s):  
Birth Order ◽  
Gestational Age ◽  
Low Birthweight ◽  
Maternal Diet ◽  
Linear Regression Analysis ◽  
Birth Certificate ◽  
Vital Statistics ◽  
Birth Certificates ◽  
Maternal Body Mass Index ◽  
Multiple Gestations

Abstract Background: Birthweight has been declining consistently for >30 years in Japan. This rapid rise in low birthweight in infants is the worst among the Organization for Economic Co-operation and Development countries.Objective: To contribute to the literature and provide new information to clarify the risk factors associated with birthweight decline in Japan.Methods: We used population-based birth certificate data from vital statistics records with prior permission and retrieved 40,968,266 birth certificates of neonates born between 1980 and 2004 to analyze time trends using linear regression analysis for examining whether the decline in birthweight could be explained by obstetrical variables such as gestational age and multiple gestations.Results: From 1980 to 2004, we observed a decline in mean birthweight with a yearly effect of -8.07 g, which became steeper after 1985, persisted until 1999, and plateaued thereafter. After adjusting for gestational age, neonatal gender, birth order, multiple gestations, and fathers’ age, the yearly effect between 1980 and 2004 reduced to -5.13 g. Conclusion: Recent decreases in birthweight among Japanese neonates were not explained fully by trends in gestational age, neonatal gender, birth order, multiple gestations, and fathers’ age. Thus, additional factors such as pre-pregnancy maternal body mass index and maternal diet should be considered.

scholarly journals Factors associated with birthweight decline in Japan (1980–2004)

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Noriko Kato ◽  
Catherine Sauvaget ◽  
Honami Yoshida ◽  
Tetsuji Yokoyama ◽  
Nobuo Yoshiike
Keyword(s):  
Birth Order ◽  
Gestational Age ◽  
Low Birthweight ◽  
Maternal Diet ◽  
Linear Regression Analysis ◽  
Birth Certificate ◽  
Vital Statistics ◽  
Birth Certificates ◽  
Maternal Body Mass Index ◽  
Multiple Gestations

Abstract Background Birthweight has been declining consistently for more than 30 years in Japan. This rapid rise in low birthweight is one of the worst among the countries of the Organization for Economic Co-operation and Development. We examined potential determinants of birthweight decline in Japan. Methods We used population-based birth certificate data from vital statistics records and retrieved 40,968,266 birth certificates of neonates born between 1980 and 2004. We analyzed time trends using linear regression analysis in examining whether the decline in birthweight could be explained by obstetrical variables such as gestational age and multiple gestations. Results From 1980 to 2004, we observed a decline in mean birthweight with a yearly effect of − 8.07 g, which became steeper after 1985, persisted until 1999, and plateaued thereafter. After adjusting for gestational age, gender, birth order, multiple gestations, and fathers’ age, the yearly effect between 1980 and 2004 persisted at − 5.13 g. Conclusion Recent decreases in birthweight among Japanese neonates were not fully explained by trends in gestational age, gender, birth order, multiple gestations, and fathers’ age. Thus, additional factors such as pre-pregnancy maternal body mass index (BMI) and maternal diet should be considered. Reducing the rate of induced deliveries and improving the BMI or diet of young women should be a public health priority.

Analysis of Factors Affecting Birthweight, Birth Length and Head Circumference: Study of Japanese Triplets

2005 ◽  
Vol 8 (6) ◽  
pp. 657-663 ◽  
Author(s):  
Yoshie Yokoyama ◽  
Masako Sugimoto ◽  
Syuichi Ooki
Keyword(s):  
Body Mass Index ◽  
Body Size ◽  
Birth Weight ◽  
Birth Order ◽  
Gestational Age ◽  
Head Circumference ◽  
Birth Length ◽  
Factors Affecting ◽  
Factors Associated ◽  
Stillborn Infant

AbstractThe aims of this study were to identify factors associated with birthweight, birth length and head circumference for triplets, and analyze these body size parameters at birth, especially head circumference, according to gestational age. The subjects of this study were 370 mothers and their 1109 triplet children (excluding one stillborn infant) who were born between 1978 and 2002. The gestational age proved to be the strongest contributing factor to birthweight, birth length and head circumference of the triplets. Moreover, sex was a significant factor affecting birthweight, birth length and head circumference. Male neonates had a higher birthweight, longer birth length and greater head circumference than female neonates. Birth order in triplets also had a significant effect on birthweight and head circumference. Lower birth- order neonates had a higher birthweight and greater head circumference. An effect of maternal pregravid body mass index (BMI) on both birth- weight and birth length was observed. The birthweights of triplets born to women whose pregravid BMIs were more than 26.0 kg/m2 weighed an average of 150 g more than those of triplets born to women whose pregravid BMIs were less than 19.8 kg/m2, and the birth length of triplets born to women whose pregravid BMIs were more than 26.0 kg/m2 averaged 1.5 cm longer than those of triplets born to women whose pregravid BMIs were less than 19.8 kg/m2. Concerning head circumference, the median head circumference of male neonates was approximately 0.5 cm longer than female neonates. Compared to singleton neonates, the median head circumference of triplets was almost the same.

Stillbirth Rate and Weight at Birth of Quintuplets in Japan

1989 ◽  
Vol 38 (1-2) ◽  
pp. 65-69 ◽  
Author(s):  
Yoko Imaizumi
Keyword(s):  
Sample Size ◽  
Birth Order ◽  
Gestational Age ◽  
Size Effects ◽  
Maternal Age ◽  
Small Sample Size ◽  
Small Sample ◽  
Stillbirth Rate ◽  
The Mean

AbstractNation-wide data in Japan on births and prenatal deaths of 16 sets of quintuplets during 1974-1985 were analysed. Among the 16 sets, 3 sets were liveborn, 8 were stillborn, and 5 were mixed, with a stillbirth rate of 0.64 (51/80). Effects of sex, maternal age and birth order on the stillbirth rate were not considered because of the small sample size. Effects of gestational age and birthweight on stillbirth rate were also examined. The mean weight of the 40 quintuplet individuals was 1,048 g.

scholarly journals Newborn Screening for Severe Combined Immunodeficiency: Do Preterm Infants Require Special Consideration?

2021 ◽  
Vol 7 (3) ◽  
pp. 40
Author(s):  
Anne E. Atkins ◽  
Michael F. Cogley ◽  
Mei W. Baker
Keyword(s):  
Newborn Screening ◽  
Premature Infant ◽  
Gestational Age ◽  
Linear Regression Analysis ◽  
Severe Combined Immunodeficiency ◽  
Cell Receptor ◽  
Full Term ◽  
Combined Immunodeficiency ◽  
Term Infants ◽  
Preterm Newborns

The Wisconsin Newborn Screening (NBS) Program began screening for severe combined immunodeficiency (SCID) in 2008, using real-time PCR to quantitate T-cell receptor excision circles (TRECs) in DNA isolated from dried blood NBS specimens. Prompted by the observation that there were disproportionately more screening-positive cases in premature infants, we performed a study to assess whether there is a difference in TRECs between full-term and preterm newborns. Based on de-identified SCID data from 1 January to 30 June 2008, we evaluated the TRECs from 2510 preterm newborns (gestational age, 23–36 weeks) whose specimens were collected ≤72 h after birth. The TRECs from 5020 full-term newborns were included as controls. The relationship between TRECs and gestational age in weeks was estimated using linear regression analysis. The estimated increase in TRECs for every additional week of gestation is 9.60%. The 95% confidence interval is 8.95% to 10.25% (p ≤ 0.0001). Our data suggest that TRECs increase at a steady rate as gestational age increases. These results provide rationale for Wisconsin’s existing premature infant screening procedure of recommending repeat NBS following an SCID screening positive in a premature infant instead of the flow cytometry confirmatory testing for SCID screening positives in full-term infants.

Factors Affecting the Production of the Coffee Farming in Uluway Village Mengkendek Sub District Tana Toraja District

2021 ◽  
Vol 6 (1) ◽  
pp. 37
Author(s):  
Renatha Mersi ◽  
Ayub Manggala Padangaran ◽  
Fahria Nadiryati Sadimantara
Keyword(s):  
Data Analysis ◽  
Qualitative Data ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Land Area ◽  
Coffee Production ◽  
Factors Affecting ◽  
Land Preparation ◽  
Processing Techniques ◽  
Coffee Farming

This study aimed to determine what factors influence coffee production in Uluway Village, Mengkendek Sub District of Tana Toraja District. The research was conducted from March to May 2020 where these factors include land area, labor, fertilizers, and pesticides. This study aimed to determine what factors influence the people's coffee production in Uluway Village, Mengkendek Sub District of Tana Toraja District. The population of this study was all the farmers who cultivated coffee in Uluway Village, Mengkendek Sub District of Tana Toraja District. The sample of this study was 78 respondents who were determined by using the census method. The analytical method used is descriptive qualitative data analysis, the second data analysis using multiple linear regression analysis, and the third. The research results can be drawn from several conclusions, including the coffee farming processing techniques in Uluway Village, namely land preparation, planting, maintenance, harvesting, and postharvest. Factors that have a real effect include land area, fertilizers, and pesticides, while factors that do not affect coffee production are labor

Risk of Neonatal and Infant Mortality in Twins and Singletons by Gestational Age

2018 ◽  
Vol 36 (08) ◽  
pp. 798-805 ◽  
Author(s):  
Han-Yang Chen ◽  
Suneet P. Chauhan
Keyword(s):  
Infant Mortality ◽  
Gestational Age ◽  
Regression Models ◽  
Causes Of Death ◽  
Error Variance ◽  
Mortality Rates ◽  
Vital Statistics ◽  
Adjusted Risk ◽  
Live Births ◽  
Risk Ratios

Objective To compare neonatal and infant mortality rates stratified by gestational age (GA) between singletons and twins and examine the three leading causes of death among them. Study Design This was a retrospective cohort study using the U.S. vital statistics datasets. The study was restricted to nonanomalous live births at 24 to 40 weeks delivered in 2005 to 2014. We used multivariable Poisson regression models with robust error variance to examine the association between birth plurality (singleton vs. twin) and mortality outcomes within each GA, while adjusting for confounders. The results were presented as adjusted risk ratios (aRRs) with 95% confidence intervals (CIs). Results Of 26,292,747 live births, 96.6% were singletons and 3.4% were twins. At 29 to 36 weeks of GA, compared with singletons, twins had a lower risk of neonatal mortality (aRR: 0.37–0.78) and infant mortality (aRR: 0.54–0.86). When examined by GA, the three leading causes of neonatal and infant mortality varied between singletons and twins. Conclusion When stratified by GA, the risk of neonatal and infant mortality was lower at 29 to 36 weeks in twins than in singletons, though the cause of death varied.

scholarly journals The anthochron as a building block of flower development

2016 ◽  
Vol 51 (8) ◽  
pp. 899-904
Author(s):  
Nereu Augusto Streck ◽  
Natalia Teixeira Schwab
Keyword(s):  
Building Block ◽  
Flower Development ◽  
Field Experiments ◽  
Linear Regression Analysis ◽  
Time Interval ◽  
Simple Linear Regression ◽  
Vegetative Development ◽  
Flower Opening ◽  
Factors Affecting ◽  
Opening Phase

Abstract: Plant vegetative development has been widely described using the phyllochron concept, but little effort has been made to describe flower development during the reproductive phase. The objective of this work was to present the anthochron, through a review of the literature, as a building block of flower development, mainly during the flower opening phase. The anthochron is the time interval needed for two subsequent flowers to achieve the same developmental stage, with units of time in days or in ºC day per flower. The concept of anthochron fulfills part of the lack of studies on flower development, since it is considered a building block of the flower opening process. The anthochron can be measured from field experiments or estimated by a simple linear regression analysis. So far, the anthochron has only been quantified in Gladiolus x grandiflorus Hort. Therefore, factors affecting the anthochron still need to be determined in order to pinpoint their effect on the flower opening rate.

Respiratory morbidity in twins by birth order, gestational age and mode of delivery

2016 ◽  
Vol 44 (8) ◽  
Author(s):  
Katja Bricelj ◽  
Natasa Tul ◽  
Mateja Lasic ◽  
Andreja Trojner Bregar ◽  
Ivan Verdenik ◽  
...  
Keyword(s):  
Birth Order ◽  
Cesarean Delivery ◽  
Gestational Age ◽  
Mode Of Delivery ◽  
Age Groups ◽  
Assisted Ventilation ◽  
Vaginal Birth ◽  
National Database ◽  
Respiratory Morbidity ◽  
Cesarean Birth

AbstractObjective:To evaluate the relationship between respiratory morbidity in twins by gestational age, birth order and mode of delivery.Methods:All twin deliveries at <37 weeks, registered in a national database, in the period 2003–2012 were classified into four gestational age groups: 33–36, 30–32, 28–29, and <28 weeks. Outcome variables included transient tachypnea of the newborn (TTN), respiratory distress syndrome (RDS) and need for assisted ventilation.Results:A total of 1836 twins were born vaginally, and 2142 twins were born by cesarean delivery, for a grand total of 3978 twins. TTN did not appear to be related to birth order and to the mode of delivery. In contrast, RDS was more frequent among the second born twins in the vaginal birth groups born at 30–36 weeks [odds ratio (OR) 2.5, 95% confidence interval (CI) 1.2–5.1 and OR 2.0, 95% CI 1.2–3.5 for 33–36 weeks and 30–32 weeks, respectively], whereas this trend was seen in the cesarean birth groups born earlier (OR 3.8, 95% CI 1.1–13.0 for 28–29 weeks). Cesarean delivery significantly increased the frequency of RDS in twin A as well as in twin B compared with vaginal birth, but only at gestational ages <30 weeks.Conclusion:Mode of delivery and birth order have a gestational age dependent effect on the incidence of RDS.

scholarly journals FACTORS AFFECTING ENTREPRENEURIAL INTENTIONS AMONG COLLEGE STUDENT

2021 ◽  
Vol 5 (2) ◽  
pp. 79-86
Author(s):  
Trisna Sary Lewaru
Keyword(s):  
College Student ◽  
Locus Of Control ◽  
Self Efficacy ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Entrepreneurial Intention ◽  
Entrepreneurial Intentions ◽  
Need For Achievement ◽  
Factors Affecting ◽  
Independent Variables

ABSTRACT This study aims to analyze the factors that influence entrepreneurial intentions among college student. The five independent variables was used include need for achievement, locus of control, self-efficacy, instrumental readiness, entrepreneurship experience. Sample in this research is students on Pattimura University totaling 160 people. Multiple linear regression analysis was used to measure this study. The results of this study indicate that need for achievement, locus of control, entrepreneurship experience have no effect on the intentions of entrepreneurial among students. Whereas instrumental readiness and self-efficacy variable has positive and significant effect on entrepreneurial intention between students of Pattimura University. Keywords : Entrepreneurship, Intentions

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