Please use this identifier to cite or link to this item: https://doi.org/10.1186/1471-2458-14-932
Title: Socioeconomic differences in childhood length/height trajectories in a middle-income country: A cohort study
Authors: Patel, R
Tilling, K
Lawlor, D.A
Howe, L.D
Bogdanovich, N
Matush, L
Nicoli, E
Kramer, M.S 
Martin, R.M
Keywords: adult
Belarus
body height
breast feeding
child
cohort analysis
controlled study
developing country
educational status
female
growth
health disparity
human
income
infant
male
newborn
occupation
parent
preschool child
randomized controlled trial
rural population
school
smoking
socioeconomics
urban population
Adult
Body Height
Breast Feeding
Child
Child, Preschool
Cohort Studies
Developing Countries
Educational Status
Female
Growth
Health Status Disparities
Humans
Income
Infant
Infant, Newborn
Male
Occupations
Parents
Republic of Belarus
Rural Population
Schools
Smoking
Socioeconomic Factors
Urban Population
Issue Date: 2014
Citation: Patel, R, Tilling, K, Lawlor, D.A, Howe, L.D, Bogdanovich, N, Matush, L, Nicoli, E, Kramer, M.S, Martin, R.M (2014). Socioeconomic differences in childhood length/height trajectories in a middle-income country: A cohort study. BMC Public Health 14 (1) : 932. ScholarBank@NUS Repository. https://doi.org/10.1186/1471-2458-14-932
Rights: Attribution 4.0 International
Abstract: Background: Socioeconomic disadvantage is associated with shorter adult stature. Few studies have examined socioeconomic differences in stature from birth to childhood and the mechanisms involved, particularly in middle-income former Soviet settings.Methods: The sample included 12,463 Belarusian children (73% of the original cohort) born in 1996-1997, with up to 14 stature measurements from birth to 7 years. Linear spline multi-level models with 3 knots at 3, 12 and 34 months were used to analyse birth length and growth velocity during four age-periods by parental educational achievement (up to secondary school, advanced secondary/partial university, completed university) and occupation (manual, non-manual).Results: Girls born to the most (versus least) educated mothers were 0.43 cm (95% confidence interval (CI): 0.28, 0.58) longer at birth; for boys, the corresponding difference was 0.30 cm (95% CI: 0.15, 0.46). Similarly, children of the most educated mothers grew faster from birth-3 months and 12-34 months (p-values for trend ?0.08), such that, by age 7 years, girls with the most (versus least) educated mothers were 1.92 cm (95% CI: 1.47, 2.36) taller; after controlling for urban/rural and East/West area of residence, this difference remained at 1.86 cm (95% CI: 1.42, 2.31), but after additionally controlling for mid-parental height, attenuated to 1.10 cm (95% CI: 0.69, 1.52). Among boys, these differences were 1.95 cm (95% CI: 1.53, 2.37), 1.89 cm (95% CI: 1.47, 2.31) and 1.16 cm (95% CI: 0.77, 1.55), respectively. Additionally controlling for breastfeeding, maternal smoking and older siblings did not substantively alter these findings. There was no evidence that the association of maternal educational attainment with growth differed in girls compared to boys (p for interaction = 0.45). Results were similar for those born to the most (versus least) educated fathers, or who had a parent with a non-manual (versus manual) occupation.Conclusions: In Belarus, a middle-income former Soviet country, socioeconomic differences in offspring growth commence in the pre-natal period and generate up to approximately 2 cm difference in height at age 7 years. These associations are partly explained by genetic or other factors influencing parental stature. Trial Registration. Current Controlled Trials: NCT01352247 assigned 9 Sept 2005; ClinicalTrials.gov. Identifier: NCT01561612 received 20 Mar 2012. © 2014 Patel et al.; licensee BioMed Central Ltd.
Source Title: BMC Public Health
URI: https://scholarbank.nus.edu.sg/handle/10635/181488
ISSN: 14712458
DOI: 10.1186/1471-2458-14-932
Rights: Attribution 4.0 International
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