Birth Weight Reference Percentiles for Chinese

Dai, Li; Deng, Changfei; Li, Yanhua; Zhu, Jun; Mu, Yi; Deng, Ying; Mao, Meng; Wang, Yanping; Li, Qi; Ma, Shuangge; Ma, Xiaomei; Zhang, Yawei

doi:10.1371/journal.pone.0104779

Cited by 235 publications

(157 citation statements)

References 33 publications

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“…The second limitation of the study was that the dataset only included Chinese infants delivered in a single reproductive centre. It has been shown that the 10th percentile values at each gestation week in a Chinese population were different from data from other countries . However, a significantly increased incidence of LBW with increased estradiol levels (Table ) in full‐term singletons may support our argument.…”

Section: Discussionsupporting

confidence: 64%

“…On the day of triggering, the median peak E 2 level was 4389 (2779-6307.5) pg/ml and the mean progesterone level 1.46 AE 1.71 ng/ml. The median oocyte number was 13 (9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19). The number of oocytes was significantly associated Supporting Information Tables S2 and S5), the E 2 level as a continuous variable was negatively associated with both the z-score and the birthweight of the newborns (adjusted P-value 0.009 and 0.01, respectively).…”

Section: Resultsmentioning

confidence: 97%

“…To calculate the proportion of small‐for‐gestational‐age (SGA) and z ‐score, a birthweight reference for Chinese population generated by National Population‐based Birth Defects Surveillance System was used. The z ‐score was defined as the weight of the individual child minus the medium weight of the reference population of children born at the same gestational age and of the same gender divided by the standard deviation from the same reference population.…”

Section: Methodsmentioning

confidence: 99%

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Supraphysiological estradiol level in ovarian stimulation cycles affects the birthweight of neonates conceived through subsequent frozen‐thawed cycles: a retrospective study

Cai

Liu

et al. 2019

BJOG

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Objective To investigate whether supraphysiological estradiol (E2) in controlled ovarian stimulation (COS) cycles affects the subsequent frozen‐thawed embryo transfer (FET) in terms of the neonatal birthweight. Design Retrospective cohort study. Setting University affiliated hospital. Population In all, 2066 patients undergoing FET cycles that resulted in live singleton births between July 2011 and Dec 2016. Interventions None. Methods Multivariable linear regression and logistic regression was used to evaluate the association between peak E2 and birthweight outcomes. Main outcome measures Birthweight, z‐score adjusted for gender and gestational age, and incidence of small‐for‐gestational‐age (SGA) and low birthweight (LBW) in singleton neonates derived from FET cycles. Results Adjusted for confounding factors, both the absolute birthweight and the z‐score of singletons following FET were negatively associated with peak E2 levels in COS. In comparison with the referent category (E2 ≤1500 pg/ml), the categories with E2 >3000 pg/ml had a significantly lower z‐score. The difference (95% CI) in estimated marginal mean of birthweights between referent category and highest E2 (>8000 pg/ml) category was 104.57 g (18.13–181.06). Multiple logistic regression analyses showed that the adjusted odds ratio (95% CI) for SGA and LBW in term singletons comparing patients with E2 >3000 pg/ml with those with E2 ≤3000 pg/ml was 2.44 (1.37–4.34) and 2.32 (1.01–5.40), respectively. Conclusions Peak E2 levels in COS cycles are negatively associated with the birthweight of singletons conceived through subsequent FET cycles. Tweetable abstract The birthweight following FET is affected by previous COS cycle.

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Section: Discussionsupporting

confidence: 64%

Section: Resultsmentioning

confidence: 97%

Section: Methodsmentioning

confidence: 99%

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Supraphysiological estradiol level in ovarian stimulation cycles affects the birthweight of neonates conceived through subsequent frozen‐thawed cycles: a retrospective study

Cai

Liu

et al. 2019

BJOG

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“…Neonatal outcome data included birthweight, Apgar score at 5 minutes, neonatal intensive care unit (NICU) admission, intubation, seizures within 24 hours of delivery, hypoglycaemia and neonatal death, defined as death within the first 28 days of life. The number of infants with birthweight <10 th percentile for gestational age in each group was determined using a published gender‐specific, population‐based Chinese birthweight reference …”

Section: Methodsmentioning

confidence: 99%

An evaluation of fetal heart rate characteristics associated with neonatal encephalopathy: a case‐control study

Frey

Liu

Lynch

et al. 2018

BJOG

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“…SGA was defined as a birth weight below the 10th percentile for gestational age based on the sexspecific curves generated for close to 1 million healthy Chinese newborns, to attenuate genetic contribution to SGA. 11 Prematurity was defined as gestation <37 weeks. Low birth weight (LBW) was defined as birth weight <2.5 kg.…”

Section: Nutritional Covariatesmentioning

confidence: 99%

Mechanistic Pathways From Early Gestation Through Infancy and Neurodevelopment

et al. 2016

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OBJECTIVE: To identify pathways through which pre-and postnatal factors directly or indirectly affect infant neurodevelopment at 12 months of age among Filipino infants. METHODS:The Bayley Scales of Infant Development, third edition was used to assess the development of 314 infants of mothers enrolled in a trial examining the safety and efficacy of praziquantel during pregnancy. Maternal covariates included socioeconomic status, iron and nutritional status, cognitive performance, and alcohol intake. Infant covariates included birth weight and feeding practices, longitudinal growth and nutritional status, hemoglobin and iron status captured at birth, and 6 and 12 months of age. Multivariable regression and structural equation modeling were used to identify significant factors associated with infant development. RESULTS:In regression models, maternal education, cognition, and iron status as well as infant weight-for-age z-score (WAZ), weight-for-length z-score, and WAZ gains were significantly associated with infant development at 12 months of age. Structural equation modeling demonstrated a direct effect of maternal cognition on most subscales of infant development and indirect effects on expressive language through effects on infant WAZ. Maternal iron status was a stronger predictor of infant cognition subscale scores than was infant iron status. Exclusive breastfeeding had a direct influence on expressive language rather than acting through improved infant iron or nutritional status. CONCLUSIONS:We identified key modifiable risk factors for impaired neurodevelopment, including prenatal risk factors such as maternal iron status. Integrated nutritional interventions that impact both maternal and infant nutritional status are likely to positively affect infant neurodevelopment through identified pathways. Dr Park conceptualized and designed the study, completed data analysis, drafted the original manuscript, and revised and reviewed the manuscript; Drs Baltazar and Tallo designed the data collection instruments and coordinated and supervised data collection at all sites; Drs Ayaso and Monterde designed the data collection instruments, received training in administration of the Bayley Scales of Infant Development, third edition, and administered these tests, and assessed nutritional status of infants at their follow-up visits; Dr Acosta developed study protocols, WHAT'S KNOWN ON THIS SUBJECT: Studies have identifi ed independent risk factors for impaired infant neurodevelopment, including birth weight, nutritional status, and feeding practices, yet few examined the pathways through which these factors directly or indirectly infl uence infant neurodevelopment. WHAT THIS STUDY ADDS:A longitudinal examination of risk factors from early gestation to 12 months of age identifi ed mechanistic pathways through which known (maternal cognition, infant nutrition) and newly identifi ed (maternal iron status) risk factors impact neurodevelopment.

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Birth Weight Reference Percentiles for Chinese

Cited by 235 publications

References 33 publications

Supraphysiological estradiol level in ovarian stimulation cycles affects the birthweight of neonates conceived through subsequent frozen‐thawed cycles: a retrospective study

Supraphysiological estradiol level in ovarian stimulation cycles affects the birthweight of neonates conceived through subsequent frozen‐thawed cycles: a retrospective study

An evaluation of fetal heart rate characteristics associated with neonatal encephalopathy: a case‐control study

Mechanistic Pathways From Early Gestation Through Infancy and Neurodevelopment

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