@article{fdi:010092974,
  title = {{C}omparison of two proxies for the preconception weight using data from a pre-pregnancy cohort in {B}enin : weight measured in the first trimester of pregnancy vs estimated by {T}homas' formula},
  author = {{Y}ovo, {E}. and {A}ccrombessi, {M}. and {B}riand, {V}. and {A}gbota, {G}ino and {H}ounkonnou, {C}. and {A}lao, {J}. and {Z}eitlin, {J}. and {T}raissac, {P}ierre and {M}artin-{P}r{\'e}vel, {Y}ves},
  editor = {},
  language = {{ENG}},
  abstract = {{A}ccurate determination of pre-pregnancy weight is essential for optimal pregnancy monitoring and antenatal care. {D}etermining pre-pregnancy weight in limited-resources settings is challenging for both clinical practice and public health research. {F}rom a 2014-2017 pre-pregnancy cohort in {B}enin, we evaluated the agreement between the measured pre-pregnancy weight ({MPPW}) and two proxies: (i) the first trimester pregnancy weight ({FTPW}) and (ii) the estimated pre-pregnancy weight ({EPPW}) using {T}homas & al. formula. {W}e analysed data from 302 pregnant women with both pre-pregnancy weight measured within 3 months before conception and weight measured during the first trimester. {U}sing segmented linear regression, we first assessed up to which gestational age the weight measured during the first trimester could reasonably estimate the {MPPW}. {T}hen the {B}land & {A}ltman method was used to assess agreement between {MPPW} and the two proxies. {A}dditional analyses were performed to assess the sensitivity of results to the timing of measurement of either {MPPW} or the two proxies. {O}n average, {FTPW} did not feature significant difference with {MPPW} up to 13.03 (11.99-14.06) weeks of gestational age. {FTPW}, measured on average at 7 ± 2.4 weeks of gestation, and the {EPPW} showed similar {B}land & {A}ltman limits of agreement with the {MPPW}. {H}owever, while the {FTPW} slightly underestimated the {MPPW} by a mean of - 0.16 (-0.08; +0.39) kg, the {EPPW} overestimated it by a mean of + 0.43 (+0.20; +0.66) kg. {M}inor differences in these results were observed when the {MPPW} was assessed earlier or within three months before pregnancy, or according to the gestational age at the time of the proxy's measurement. {I}n conclusion, in {S}outhern {B}enin and up to 12-14 weeks of pregnancy, the {FTPW} appeared to be a good proxy of the {MPPW} while using {T}homas' formula did not enhance pre-pregnancy weight estimation.},
  keywords = {{BENIN}},
  booktitle = {},
  journal = {{PL}o{S} {O}ne},
  volume = {19},
  numero = {11},
  pages = {e0312840 [14 ]},
  ISSN = {1932-6203},
  year = {2024},
  DOI = {10.1371/journal.pone.0312840},
  URL = {https://www.documentation.ird.fr/hor/fdi:010092974},
}