北京和深圳两城市体检人群腰椎骨密度结果分析

Analysis of lumbar vertebrae bone mineral density in persons for health examination of Beijing and Shenzhen

目的:探讨体质指数和骨密度之间的关系,比较北京和深圳两城市人群骨密度情况。方法:采用美国Lunar公司的双能X线吸收测定仪,对北京、深圳慈铭体检中心20～90岁健康体检人群共5153例(其中北京地区2981例、深圳地区2172例)进行腰椎骨密度测定,对骨密度数据进行统计学分析。结果:北京BMI≥24者骨密度高于18.5≤BMI<24者骨密度,差异有统计学意义(P值均<0.05),除20～30岁北京男性体检者外(t=1.773,P=0.244),其余北京BMI≥24者骨密度高于BMI<18.5者骨密度(P值均<0.05)。深圳男性体检者和50岁以上女性体检BMI≥24者骨密度高于18.5≤BMI<24者骨密度,差异有统计学意义(P值均<0.05),其他年龄组女性体检者不同BMI之间骨密度差异无统计学意义(P>0.05)。对两城市体检者骨密度进行比较,在BMI≥24男性和18.5≤BMI<24女性中,北京体检者骨密度高于深圳体检者骨密度(P<0.05),其余各组,两城市骨密度差异无统计学意义(P>0.05)。结论:不同性别骨密度随体质指数变化模式不同,北京、深圳两城市人群骨密度在部分人群中有差异,北京高于深圳。

Objective:The aim of this study was to investigate the correlation between body mass index(BMI)and bone mineral density(BMD),and to compare the difference of BMD the people for health examination of Shenzhen and Beijing.Methods:BMD values of the lumbar spine 1~4 of 5153 healthy people aged from 20 to 90 years were determined using a dual X-ray absorptiometry(Lunar,America)at the Ciming Physical Examination Centers(2172 participants from Shenzhen and 2981 from Beijing).Two independent samples t test and one-way ANOVA were used to analyze the data.Results:The BMD of people whose BMI was bigger or equal to 24 in Beijing was significantly higher than that whose BMI was bigger or equal to 18.5 but less than 24(P<0.05).The BMD of male and female healthy persons(over 50 years)in Shenzhen was higher than that whose BMI was bigger or equal to 18.5 but less than 24(P<0.05).There was no significant difference in female of other age groups with different BMIs(P>0.05).The BMD of male with BMI bigger than 24 in Beijing was significantly higher than that of female in Shenzhen whose BMI was bigger or equal to 18.5 but less than 24(P<0.05).Conclusion:The patterns of change in BMD vary in different genders with different BMIs.The BMD of some healthy people in Beijing is significantly higher than that in Shenzhen.