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目的了解曲靖市幼儿园儿童骨密度,为评价幼儿骨发育、钙营养状况、指导合理补钙提供科学依据。方法 2012年8月选择2~6岁儿童897名,采用定量超声技术,对其跟骨进行骨密度测定。计数资料采用χ2检验,P<0.05为差异有统计学意义。结果男童骨密度指数正常的占49.79%,低骨密度的占50.21%;女童骨密度指数正常的占50.59%,低骨密度的占49.40%。不同年龄男童、女童骨密度比较差异均无统计学意义(χ2=0.287、0.626,均P>0.05)。目前身高发育达均值的儿童,有近一半骨密度指数较低,存在缺钙现象。这与儿童的年龄、性别没有关系。结论骨密度测定对幼儿生长发育、营养状况的评价,协助钙营养缺乏的诊断、治疗具有重要意义。
Objective To understand the bone mineral density of children in kindergarten in Qujing city and to provide a scientific basis for evaluating the bone development and calcium nutrition of young children and for guiding rational calcium supplement. Methods A total of 897 children aged 2 to 6 years old were selected in August 2012. Quantitative ultrasound was used to measure the bone mineral density of the calcaneus. Count data using χ2 test, P <0.05 for the difference was statistically significant. Results The boys had a normal BMD of 49.79% and a low BMD of 50.21%. The girls had a normal BMD of 50.59% and a low BMD of 49.40%. There was no significant difference in bone mineral density between boys and girls of different ages (χ2 = 0.287,0.626, all P> 0.05). At present up to the mean height of children, nearly half of the lower bone mineral density index, the presence of calcium deficiency. This has nothing to do with children’s age and gender. Conclusion The determination of bone mineral density in children’s growth and development, nutritional status assessment, to assist in the diagnosis and treatment of calcium deficiency, is of great significance.