Trial reportScientific reports2019
Pre-pregnancy underweight and obesity are positively associated with small-for-gestational-age infants in a Chinese population.
Trial report in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.
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Who cites it
30 citing papers in PubMed.
- Prolonged pregnancy and stillbirth among women with overweight or obesity - a population-based study in Sweden including 64,632 women.BMC pregnancy and childbirth · 2023Trial
- Pregnancy outcomes among women born in Somalia and Sweden giving birth in the Stockholm area - a population-based study.Global health action · 2020Trial
- Joint Associations of Maternal Smoking and Pre-Pregnancy BMI with Term Low Birthweight and Small-for-Gestational-Age Births: A Cross-Sectional Analysis of 2024 United States Birth Data.International journal of environmental research and public health · 2026Article
- Risk factors for developmental delays in small for gestational age children at age of 24-36 months.European child & adolescent psychiatry · 2026Article
- Article
- General obesity index or central obesity indicators: which is a better predictor of body fat percentage in the first trimester?BMC pregnancy and childbirth · 2025Article
- Obesity and Pregnancy: Impact on Childbirth Timing, Delivery Mode, and Maternal Recovery: An Update.Medical sciences (Basel, Switzerland) · 2025Review
- Maternal high fat and high sugar diet impacts on key DNA methylation enzymes in offspring brain in a sex-specific manner.Journal of neuroendocrinology · 2025Article
- Effect of Preconception Care on Anemia and Body Mass Index among Women in a Rural and Tribal Area, Nashik District, India.Women's health reports (New Rochelle, N.Y.) · 2025Article
- Position statement of Italian Society of Obesity (SIO): Gestational Obesity.Eating and weight disorders : EWD · 2024Review
- Association between Perinatal Outcomes and Maternal Risk Factors: A Cohort Study.Medicina (Kaunas, Lithuania) · 2024Article
- Obesity in Pregnancy as a Risk Factor in Maternal and Child Health-A Retrospective Cohort Study.Metabolites · 2024Article
- Medical and obstetric comorbidities and delivery outcomes in overweight and obese parturients: a retrospective analysis.Journal of anesthesia, analgesia and critical care · 2023Article
- Weight gain patterns among pregnancies with obesity and small- and large-for-gestational-age births.Obesity (Silver Spring, Md.) · 2023Article
- Article
- Associations between gestational weight gain and adverse neonatal outcomes: a comparison between the US and the Chinese guidelines in Chinese women with twin pregnancies.BMC public health · 2023Article
- Markers of inflammation in obese pregnant women: Adenosine deaminase and high sensitive C - reactive protein.European journal of obstetrics & gynecology and reproductive biology: X · 2022Article
- Associations of maternal anthropometrics with newborn anogenital distance and the 2:4 digit ratio.Human reproduction (Oxford, England) · 2022Article
- Processed Dietary Patterns during Pregnancy Are Associated with Low Birth Weight at Term among Women of Advanced and Non-Advanced Age.Nutrients · 2022Article
- Association of Interpregnancy Interval With Adverse Birth Outcomes.JAMA network open · 2022Article
Corrections and comments
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Authors and funding
11 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The association between suboptimal pre-pregnancy body mass index (BMI) and small-for-gestational-age (SGA) infants is not well defined. We investigated the association between pre-pregnancy BMI and the risk of SGA infants in a Chinese population. We performed a cohort study among 12029 mothers with a pregnancy. This cohort consisted of pregnant women that were: normal-weight (62.02%), underweight (17.09%), overweight (17.77%) and obese (3.12%). Birth sizes were reduced in the underweight and obese groups compared with the normal-weight group. Linear regression analysis indicated that birth size was positively associated with BMI in both the underweight and normal-weight groups. Further analysis showed that 12.74% of neonates were SGA infants in the underweight group, higher than 7.43% of neonates reported in the normal-weight group (adjusted RR = 1.92; 95% CI: 1.61, 2.30). Unexpectedly, 17.60% of neonates were SGA infants in the obese group, much higher than the normal-weight group (adjusted RR = 2.17; 95% CI: 1.57, 3.00). Additionally, 18.40% of neonates were large-for-gestational-age (LGA) infants in the obese group, higher than 7.26% of neonates reported in the normal-weight group (adjusted RR = 3.00; 95% CI: 2.21, 4.06). These results suggest that pre-pregnancy underweight increases the risk of SGA infants, whereas obesity increases the risks of not only LGA infants, but also SGA infants.
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