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. 2009 Jul-Aug;36(4):388-99.
doi: 10.1080/03014460902835606. Epub 2009 May 16.

Relative height and weight among children and adolescents of rural southwestern Nigeria

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Relative height and weight among children and adolescents of rural southwestern Nigeria

Omolola Ayoola et al. Ann Hum Biol. 2009 Jul-Aug.

Abstract

Background: There are few data describing the relative height and weight patterns of children and adolescents in rural Nigeria, despite a prevalence of stunting of over 38% among children younger than 5 years.

Aim: The present study documented the height and weight patterns relative to international standards among children and adolescents aged 5-20 years in rural Nigeria.

Subjects and methods: Children 5-20 years of age were enrolled from two rural villages. Height and weight were measured; body composition was estimated using bioelectrical impedance analysis. z-scores and centiles for height and body mass index were calculated; prevalences of low relative height (i.e.>2 standard deviations below mean for age and sex) and weight by sex and age were estimated.

Results: A total of 623 participants (326 male and 297 female) were enrolled. The mean height-for-age z-score for males younger than 19 years was -2.1 and prevalence of low relative height was 50%. Among females, the mean height-for-age z-score was -1.2 during adolescence; only 15% of adolescent females were of low relative height. Based on BMI-for-age, 37% of the adolescent males and 23% of females were underweight. No children or adolescents were overweight based on BMI-for-age.

Conclusions: Low relative height and underweight occur in a large proportion of children and adolescents in rural Nigeria, with the lowest relative heights and weights occurring in mid-adolescence and among males.

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Figures

Figure 1
Figure 1
Mean (± SD) difference between male participants' measured height and mean reference standard of height-for-age. For participants aged 5 20 years, the reference standard was CDC/NCHS sex-specific height-for-age standards (reference); for participants 21 30 years, the reference standard was the National Health and Nutrition Examination Survey III age- and sex-specific height standards for African-Americans (reference).
Figure 2
Figure 2
Mean (± SD) difference between female participants' measured height and mean reference standard of height-for-age. For participants aged 5 20 years, the reference standard was CDC/NCHS sex-specific height-for-age standards (reference); for participants 21 30 years, the reference standard was the National Health and Nutrition Examination Survey III age- and sex-specific height standards for African-Americans (reference).

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