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Trends in urban/rural inequalities in physical growth among Chinese children over three decades of urbanization in Guangzhou: 1985–2015

机译:中国儿童在广州三十年来城市化三十年的中国儿童体育中城市/农村不平等的趋势:1985-2015

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BACKGROUND:Great growth inequalities between urban and rural areas have been reported in China over the past years. By examining urban/rural inequalities in physical growth among children ?7?years old over the past three decades from 1985 to 2015 in Guangzhou, we analyzed altering trends of anthropometric data in children and their association with economic development during the period of rapid urbanization in Guangzhou.METHODS:The height, body weight and nutrition status of children under 7?years old were obtained from two successive cross-sectional surveys and one health surveillance system. Student's t-test, Spearman's rank-order correlation and polynomial regression were used to assess the difference in physical growth between children in urban and rural areas and the association between socioeconomic index and secular growth changes.RESULTS:A height and weight difference was found between urban and rural children aged 0-6?years during the first two decades of our research (1985-2005), which gradually narrowed in both sex groups over time. By the end of 2015, elder boys (age group ≥5?year) and girls (age group ≥4?year) in rural areas were taller than their counterparts in urban areas (p??0.05).The same trend could be witnessed in the weight of children aged 6?years, with a?-?1.30?kg difference (P?=?0.03) for boys, and a?-?0.05 difference (P?=?0.82) for girls. When GDP increased, the gap in boys' weight-for-age z-score (WAZ from 0.25 to 0.01) and height-for-age z-score (HAZ from 0.55 to 0.03) between urban and rural areas diminished, and disappeared when the GDP per capita (USD) approached 25,000. In either urban or rural areas, the urbanization rate and GDP were positively associated with the prevalence of obesity (all R??0.90 with P??0.05) and negatively correlated with the prevalence of stunted growth (all R??-0.87 with P??0.05).CONCLUSION:Growth inequalities gradually decreased with economic development and urbanization, while new challenges such as obesity emerged. To eliminate health problems due to catch-up growth among rural children, comprehensive intervention programs for early child growth should be promoted in rural areas.
机译:背景:在过去几年中,中国已在中国报告城乡之间的巨大增长不平等。通过在1985年至2015年在广州审查儿童的身体增长中的城市/农村不平等,从广州到2015年,我们分析了儿童人体数据的改变趋势及其与快速城市化期间的经济发展协会在广州。德内斯:7岁以下儿童的身高,体重和营养状况是从两个连续的横断面调查和一个健康监测系统获得的。学生的T-Test,Spearman的秩序相关和多项式回归用于评估城乡儿童的物理增长差异,社会经济指数与世俗生长变化之间的关系。结果:在城乡儿童年龄0-6岁?我们的研究前两十年来(1985-2005),这在两次中逐渐缩小。到2015年底,农村的老年男孩(年龄≥5?一年)和女孩(年龄组≥4年)比城市地区的同行高(P?<?0.05)。相同的趋势可能是目睹了6岁的儿童的重量,有一个? - ?1.30?kg差异(p?= 0.03)男孩,一个? - ?0.05差异(p?= 0.82)女孩。当GDP增加时,男孩的重量Z分数(WAZ为0.25至0.01)和城市地区之间的血统Z分数(HAZ为0.55至0.03),并消失,消失人均GDP(USD)接近25,000。在城市或农村地区,城市化率和GDP与肥胖的患病率有关(所有R?> 0.90,P?<0.05),与发育不良生长的患病率负相关(所有R?<? - 0.87与p?<?0.05)。结论:经济发展和城市化的生长不平等逐渐减少,而肥胖的新挑战则出现。为了消除由于农村儿童的增长而消除健康问题,农村应促进早期儿童增长的全面干预计划。

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