TY - JOUR
T1 - Household income, fetal size and birth weight
T2 - an analysis of eight populations
AU - Turner, Steve
AU - Posthumus, Anke G
AU - Steegers, Eric A P
AU - AlMakoshi, Amel
AU - Sallout, Bahauddin
AU - Rifas-Shiman, Sheryl L
AU - Oken, Emily
AU - Kumwenda, Ben
AU - Alostad, Fatemah
AU - Wright-Corker, Catherine
AU - Watson, Laura
AU - Mak, Diane
AU - Cheung, Hiu Ching
AU - Judge, Alice
AU - Aucott, Lorna
AU - Jaddoe, Vincent W V
AU - Annesi Maesano, Isabella
AU - Soomro, Munawar Hussain
AU - Hindmarsh, Peter
AU - Jacobsen, Geir
AU - Vik, Torstein
AU - Riaño-Galan, Isolina
AU - Rodríguez-Dehli, Ana Cristina
AU - Lertxundi, Aitana
AU - Rodriguez, Loreto Santa Marina
AU - Vrijheid, Martine
AU - Julvez, Jordi
AU - Esplugues, Ana
AU - Iñiguez, Carmen
N1 - © Author(s) (or their employer(s)) 2022. No commercial re-use. See rights and permissions. Published by BMJ.
PY - 2022/7
Y1 - 2022/7
N2 - BACKGROUND: The age at onset of the association between poverty and poor health is not understood. Our hypothesis was that individuals from highest household income (HI), compared to those with lowest HI, will have increased fetal size in the second and third trimester and birth.METHODS: Second and third trimester fetal ultrasound measurements and birth measurements were obtained from eight cohorts. Results were analysed in cross-sectional two-stage individual patient data (IPD) analyses and also a longitudinal one-stage IPD analysis.RESULTS: The eight cohorts included 21 714 individuals. In the two-stage (cross-sectional) IPD analysis, individuals from the highest HI category compared with those from the lowest HI category had larger head size at birth (mean difference 0.22 z score (0.07, 0.36)), in the third trimester (0.25 (0.16, 0.33)) and second trimester (0.11 (0.02, 0.19)). Weight was higher at birth in the highest HI category. In the one-stage (longitudinal) IPD analysis which included data from six cohorts (n=11 062), head size was larger (mean difference 0.13 (0.03, 0.23)) for individuals in the highest HI compared with lowest category, and this difference became greater between the second trimester and birth. Similarly, in the one-stage IPD, weight was heavier in second highest HI category compared with the lowest (mean difference 0.10 (0 .00, 0.20)) and the difference widened as pregnancy progressed. Length was not linked to HI category in the longitudinal model.CONCLUSIONS: The association between HI, an index of poverty, and fetal size is already present in the second trimester.
AB - BACKGROUND: The age at onset of the association between poverty and poor health is not understood. Our hypothesis was that individuals from highest household income (HI), compared to those with lowest HI, will have increased fetal size in the second and third trimester and birth.METHODS: Second and third trimester fetal ultrasound measurements and birth measurements were obtained from eight cohorts. Results were analysed in cross-sectional two-stage individual patient data (IPD) analyses and also a longitudinal one-stage IPD analysis.RESULTS: The eight cohorts included 21 714 individuals. In the two-stage (cross-sectional) IPD analysis, individuals from the highest HI category compared with those from the lowest HI category had larger head size at birth (mean difference 0.22 z score (0.07, 0.36)), in the third trimester (0.25 (0.16, 0.33)) and second trimester (0.11 (0.02, 0.19)). Weight was higher at birth in the highest HI category. In the one-stage (longitudinal) IPD analysis which included data from six cohorts (n=11 062), head size was larger (mean difference 0.13 (0.03, 0.23)) for individuals in the highest HI compared with lowest category, and this difference became greater between the second trimester and birth. Similarly, in the one-stage IPD, weight was heavier in second highest HI category compared with the lowest (mean difference 0.10 (0 .00, 0.20)) and the difference widened as pregnancy progressed. Length was not linked to HI category in the longitudinal model.CONCLUSIONS: The association between HI, an index of poverty, and fetal size is already present in the second trimester.
KW - Birth Weight
KW - Embryonic And Fetal Development
KW - Epidemiology
KW - Poverty
UR - http://www.scopus.com/inward/record.url?scp=85128708291&partnerID=8YFLogxK
U2 - 10.1136/jech-2021-218112
DO - 10.1136/jech-2021-218112
M3 - Article
C2 - 35414519
SN - 0143-005X
VL - 76
SP - 629
EP - 636
JO - Journal of Epidemiology and Community Health
JF - Journal of Epidemiology and Community Health
IS - 7
ER -