Zong Xinnan, Li Hui, Zhang Ya-Qin, Wu Huahong
a Department of Growth and Development , Capital Institute of Pediatrics , Beijing , PR China.
Ann Hum Biol. 2017 Nov;44(7):636-641. doi: 10.1080/03014460.2017.1358394.
Previous studies have reported a narrowing tendency in urban-suburban rural differences for height, but almost no tendency of narrowing for weight in Chinese children between 1975-2005.
To examine urban-suburban rural disparities for both height and weight in a recent 10-year period.
A representative sample of 161,643 children under 7 years old was obtained from the 5th national survey conducted in urban and suburban rural areas of the nine cities in China in 2015. Trends in urban-suburban rural differences were assessed from 1975-2015.
Generally, urban boys and girls were taller or heavier than their suburban rural counterparts. By 2015, there were almost no obvious differences for urban-suburban rural height differences for children under 3. Urban-suburban rural weight differences narrowed sharply in the 10-year period. There were no obvious differences for urban-suburban rural height differences among the 3rd, 50th and 97th percentiles; however, the weight differences at the 97th percentile were larger than at the 50th percentile for children over 3.
The narrowing urban-suburban rural disparities in China suggest the physical growth inequality may be eliminated, along with the sustained improvement of socioeconomic status and the acceleration of urbanisation process in suburban rural areas.
以往研究报告称，1975 - 2005年间中国儿童身高的城乡差异呈缩小趋势，但体重差异几乎没有缩小趋势。
研究近10年中国城乡儿童身高和体重的差异。
选取2015年在中国9个城市的城乡地区进行的第五次全国调查中的161,643名7岁以下儿童作为代表性样本。评估1975 - 2015年城乡差异的变化趋势。
总体而言，城市男孩和女孩比城乡结合部的同龄人更高或更重。到2015年，3岁以下儿童的城乡身高差异几乎没有明显差异。城乡体重差异在10年期间急剧缩小。在第3、第50和第97百分位数中，城乡身高差异没有明显差异；然而，3岁以上儿童在第97百分位数的体重差异大于第50百分位数。
中国城乡差异的缩小表明，随着社会经济地位的持续改善和城乡结合部地区城市化进程的加速，身体生长不平等现象可能会消除。
