1. Sudip Datta Banik1*, Barry Bogin2, Federico Dickinson1
Effect of stunting and socioeconomic traits on height distance and velocity
in boys and girls aged 9 to 18 years in Merida, Yucatan
Sudip Datta Banik1*, Barry Bogin2, Federico Dickinson1
1Department of Human Ecology, Cinvestav-Merida, Mexico
2Centre for Global Health and Human Development, School of Sport, Exercise and Health Sciences, Loughborough University, United Kingdom
Cinvestav
RESULTS
ABOUT THIS STUDY
In a mixed longitudinal study carried out during 2008 to 2010 in Merida, Yucatan, the height of 975 school-going children and adolescents (475 boys and 500 girls) aged 9 to 18 years were measured twice with a gap of one calendar year.
Boys and girls are shorter, on average, compared with WHO growth references.
Rates of stunting for boys equalled 11.16% and for girls 12.6%.
Peak height velocity in stunted subjects was about one year delayed compared with non-stunted subjects of either sex. Height growth (cm per year) was higher in stunted subjects at some ages especially at puberty. (Figures 1 & 2)
OBJECTIVES
To record height (cm) of school going children and adolescents of both sexes on two consecutive occasions with a gap of one year aged between 9 to 17 years and 10 to 18 years respectively.
To estimate height growth (cm per year) by age and sex.
3. To estimate height for age z-scores and to observe differences in height distance and velocity among stunted and normally growing subjects.
4. To describe varying growth rates among subjects of different socioeconomic backgrounds (SES).
Boys and girls with normal birth weight and higher socioeconomic status (SES) were consistently taller.
Mayan subjects were consistently shortest and had the lowest SES. Boys of Ethnic group I (Mayan) had higher growth rate, especially at the age of PHV compared to the other groups (II and III, Mestizos). Among girls this trend was found to be opposite.
METHODS
Sample
975 Boys and girls
from schools in Merida, Yucatan.
United States of America
Florida
SOCIOECONOMIC
STATUS
(Nominal and ordinal)
Paternal and maternal surnames:
I. Maya-Maya
II. Maya-Non Maya
III. Non Maya-Non Maya
Ethnicity
Less than 2500 grams
Higher than 2500 grams
Birth weight
Technical,
General services including
professionals
Fathers’ occupation
1= First measurement; 2= Second measurement
North of Merida
South of Merida
Zone of residence
Weight, Height,
BMI
Anthropometric Data
Up to High School,
University education
Mothers’ education
Statistical Techniques
T-Test, ANOVA,
Correlation Spearman and Pearson,
Chi Square
SPSS 13.0 for Windows
Index of crowding
Number of family
members/number of rooms :
Not crowded(<3),
Crowded (> 3) (2)
Health care
Public
Private
Below 20 years
20 to 29 years
30 years and above
Mothers’ age at delivery
CONCLUSION
Smoothing of data was performed through LMS
Professor Tanner’s legacy lives on as new topics for adolescent research are developed.
Acknowledgement: The study was a part of research project (*) Ecología humana de la migración en Yucatán (CONACYT H) of Dr. Federico Dickinson