Is the twin‐singleton difference in BMI related to the difference in birth weight? A register‐based birth cohort study of <scp>N</scp>orwegian males

Eriksen, Willy; Tambs, Kristian

doi:10.1002/ajhb.22835

Cited by 4 publications

(2 citation statements)

References 40 publications

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“…17,18,24 Moreover, while infants born with IUGR should be analyzed separately because this condition is associated with delays in all aspects of the growth process, 20,27 many complications, 28 and increased risk of long-term health problems, [29][30][31] many previous studies did not account for this condition. 21,24,25 Similarly, in our study, we analyzed singleton and multiple pregnancies given that multiple pregnancies are associated with a different prognosis, [50][51][52] pathology, and cause of prematurity, 53,54 while this was not done in previous studies, to our knowledge.…”

Section: Discussionmentioning

confidence: 99%

Analysis of Factors Associated With Body Mass Index at Ages 18 and 36 Months Among Infants Born Extremely Preterm

et al. 2021

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IMPORTANCEThe development of neonatology has been associated with improved survival among infants born extremely preterm, and understanding their long-term outcomes is becoming increasingly important. However, there is little information on body mass index (BMI) among these children.OBJECTIVE To determine factors associated with BMI at ages 18 months and 36 months among infants born extremely preterm. DESIGN, SETTING, AND PARTICIPANTSThis retrospective, multicenter cohort study was conducted using data from the Neonatal Research Network Japan database for 8838 infants born at gestational ages 23 to 28 weeks with data on BMI at 18 months and 36 months. Data were analyzed from April 2018 through June 2021. EXPOSURES BMI and BMI z score at ages 18 months and 36 months were regressed with gestational age, intrauterine growth restriction (IUGR) status, and complications during pregnancy and the neonatal period separately by presence of multiple pregnancy and sex. MAIN OUTCOMES AND MEASURES BMI and BMI z score at ages 18 months and 36 months. RESULTS Among 16 791 eligible infants born extremely preterm, 8838 infants were included in the analysis. There were 7089 infants born from single pregnancies (mean [SD] gestational age, 26.0 [1.6] weeks; 3769 [53.2%] boys; mean [SD] birth weight, 847 [228] g) and 1749 infants born from multiple pregnancies (mean [SD] gestational age, 26.3 [1.5] weeks; 903 [51.6%] boys; mean [SD]birth weight, 860 [217] g). In single pregnancies, every week of increased gestational age was associated with an increase in BMI of 0.21 (95% CI, 0.17-0.25) among boys and 0.20 (95% CI, 0.15-0.25) among girls at age 18 months and 0.21 (95% CI, 0.18-0.24) among boys and 0.21 (95% CI, 0.18-0.24) among girls at age 36 months. There was an interaction association between gestational age and IUGR among boys at age 36 months, with a decrease in the change associated with gestational age of 0.12 (95% CI, 0.05-0.19). Every week of increased gestational age in single pregnancies was associated with an increase in BMI z score of 0.14 (95% CI, 0.17-0.21) among boys and 0.17 (95% CI, 0.13-0.21) among girls at age 18 months and 0.19 (95% CI, 0.16-0.22) among boys and 0.17 (95% CI, 0.15-0.20) among girls at age 36 months. Among single pregnancies, IUGR was associated with a decrease in BMI among boys (0.59 [95% CI, 0.23-0.95]) and girls (0.75 [95% CI,]) and BMI z score among boys 0.85 [95% CI, 0.25-0.95)] and girls (0.67 [95% CI, 0.36-0.97] at age 18 months and BMI among boys (0.44 [95% CI, 0.17-0.18]) and girls (0.84 [95% CI, 0.55-1.12]) and BMI z score among boys (0.46 [95% CI, 0.21-0.71]) and girls (0.77 [95% CI, 0.53-1.01]) at age 36 months. In multiple pregnancies, IUGR was associated with a decrease in BMI z score at age 36 months among boys (0.26 [95% CI, 0.42-0.89]) and girls (0.29 [95% CI, 0.22-0.79]). In single pregnancies (continued) Key Points Question What factors are associated with body mass index (BMI) in the first 36 months of life among infants born at gestational age less than 28 weeks? Findings In t...

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Section: Discussionmentioning

confidence: 99%

Analysis of Factors Associated With Body Mass Index at Ages 18 and 36 Months Among Infants Born Extremely Preterm

et al. 2021

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“…There is mixed evidence for in-telligence (Posthuma et al, 2000;Voracek and Haubner, 2008), and evidence for differences in birth weight, BMI (e.g. Eriksen and Tambs, 2016), and outcomes that appear to be closely linked to parent-child interaction and communication, such as a child's verbal ability (e.g. Rutter et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Is there something special about twin families? A comparison of parenting styles in twin and non-twin families

Mönkediek

Schulz

Eichhorn

et al. 2020

Social Science Research

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Twin-singleton differences

Christensen

2022

Twin Research for Everyone

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Is the twin‐singleton difference in BMI related to the difference in birth weight? A register‐based birth cohort study of Norwegian males

Abstract: Male twins born in Norway during 1967 to 1984 had lower BMI at the military conscription than had singletons, and a part of this difference may probably be attributed to lower intrauterine growth rate among twins. Am. J. Hum. Biol. 28:566-573, 2016. © 2016 Wiley Periodicals, Inc.

Cited by 4 publications

References 40 publications

Analysis of Factors Associated With Body Mass Index at Ages 18 and 36 Months Among Infants Born Extremely Preterm

Analysis of Factors Associated With Body Mass Index at Ages 18 and 36 Months Among Infants Born Extremely Preterm

Is there something special about twin families? A comparison of parenting styles in twin and non-twin families

Twin-singleton differences

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