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Gestational weight gain rates in the first and second trimesters are associated with small for gestational age among underweight women: a prospective birth cohort study.

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  • معلومة اضافية
    • المصدر:
      Publisher: BioMed Central Country of Publication: England NLM ID: 100967799 Publication Model: Electronic Cited Medium: Internet ISSN: 1471-2393 (Electronic) Linking ISSN: 14712393 NLM ISO Abbreviation: BMC Pregnancy Childbirth Subsets: MEDLINE
    • بيانات النشر:
      Original Publication: London : BioMed Central, [2001-
    • الموضوع:
      Gestational Weight Gain* ; Infant, Small for Gestational Age* ; Pregnancy Trimesters* ; Pregnant People*; Thinness/*epidemiology; Adult ; China/epidemiology ; Cohort Studies ; Female ; Humans ; Pregnancy ; Pregnancy Outcome/epidemiology ; Prospective Studies
    • نبذة مختصرة :
      Background: Despite the well-studied effects of gestational weight gain (GWG) on offspring health, little is known about the association of trimester-specific GWG with offspring birth weight among underweight pregnant women. This study aimed to explore the association of trimester-specific GWG rate with small for gestational age (SGA) in underweight women.
      Methods: The GWG rate of underweight pregnant women (pre-pregnancy body mass index [BMI] lower than 18.5 kg/m 2 ) of the Born in Guangzhou Cohort Study was calculated as the weight gain during a specific trimester divided by the corresponding duration of week. Total GWG was calculated as the weight difference between pre-pregnancy and delivery, and was categorized into inadequate, adequate, and excessive weight gain based on the 2009 Institute of Medicine (IOM) weight gain recommendation. The INTERGROWTH-21 st standards were used to define SGA. Logistic regression models were used to examine the associations of total GWG and trimester-specific GWG rates with SGA. Associations between trimester-specific GWG rates and SGA were also analyzed separately based on different total GWG categories (i.e. inadequate and adequate/excessive GWG).
      Results: Of the 3839 participants, SGA births occurred in 397 (10.3%), and mean GWG was 14.9 kg (SD 3.9). A lower risk of SGA was observed among women with higher GWG rate (per 0.5 kg/week increase) during the first (adjusted OR [aOR] 0.74, 95%CI 0.57, 0.96) and second (adjusted OR [aOR] 0.40, 95%CI 0.30, 0.55) but not third trimester. Similar association between higher GWG rate during the second trimester and a decreased risk of SGA were observed among women with inadequate (< 12.5 kg) and adequate/excessive (≥12.5 kg) total GWG, respectively. Compared to women with adequate GWG rate, women with inadequate GWG rate during the second trimester had a significantly increased risk of SGA (aOR 1.58, 95% CI 1.14, 2.20).
      Conclusions: Second-trimester GWG might be the key driver for the association between inadequate GWG and increased risk of SGA births in underweight women.
      (© 2022. The Author(s).)
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    • Contributed Indexing:
      Keywords: Gestational weight gain; Gestational weight gain rate; Small for gestational age; Underweight
    • الموضوع:
      Date Created: 20220206 Date Completed: 20220221 Latest Revision: 20250103
    • الموضوع:
      20250114
    • الرقم المعرف:
      PMC8818159
    • الرقم المعرف:
      10.1186/s12884-022-04433-4
    • الرقم المعرف:
      35123424