| ObjectivesWe aim to assess the distribution of bone mineral density and the prevalence of osteoporosis in Han and Yugur people in Gansu province.We also aim to explore the influenced factors of osteoporosis.MethodsIn July and August 2016,a cross-sectional survey was performed in Lanzhou city,Zhangye city,Gaotai county,Yugur Autonomous county of Sunan in Gansu province,China.Individuals aged 20-80 were recruited using a multistage cluster sampling method.Ultimately,a total of 5857 individuals were included in analysis,including 4141 Han adults and 1716 Yugur adults.All participants were measured the bone strength by quantitative ultrasound method.The difference of osteoporosis prevalence between Han and Yugur people,and the associated factors of osteoporosis were analyzed by Chi-square test and logistic regression analysis.ResultsBoth in the Han and Yugur people,the peak value of male and female bone mineral density was in the age group of 20 to 29 years,and it was higher in Yugur group than that of the Han group(Yugur vs.Han:Male 75.0±6.6 vs.72.6±7.1;Female 74.3±7.0 vs.71.5±6.4).The prevalence of osteoporosis in Han population was 13.16%,the prevalence of osteoporosis was 11.03%in Yugur population,and there was no significant difference in the adjusted prevalence of osteoporosis between these two groups(12.46%vs.13.00%P>0.05).The prevalence of osteoporosis in urban area of Han people was 12.42%,the prevalence of osteoporosis in rural area of Han people was 12.88%,and there was also no significant difference in the adjusted prevalence people was 14.65%,and there was no significant difference in the adjusted prevalence of osteoporosis between these two areas in Han group(Urban vs.Rural:12.70%vs.13.35%P>0.05).The prevalence of osteoporosis in urban area of Yugur people was 9.88%,the prevalence of osteoporosis in rural area of Han of osteoporosis between these two areas in Yugur group(Urban vs.Rural:10.20%vs.12.47%P>0.05).From the logistic regression analysis of influenced factors of osteoporosis,we found that alcohol drinking could decrease the risk of osteoporosis,the risk of osteoporosis for alcohol drinking was decreased by 25.7%compared with those who did not in Han people(OR:0.743,95%CI:0.581-0.951),which was decreased by 40.7%in Yugur people(OR:0.593,95%CI:0.398-0.884).Among residents with moderate(OR=0.514,95%CI:0.325-0.814)or high(OR=0.606,95%CI:0.376-0.975)degree alcohol drinking in men,they had lower risk of suffering from osteoporosis than never-drinkers,the similar effect of low alcohol drinking in women(OR=0.715,95%CI:0.516-0.992).Menopause is associated with osteoporosis(P Non-menopausal=9.36%vs.P menopausal=23.34%,P<0.0001)in the 45-55 years old women.For the whole female participants,the odds of osteoporosis for postmenopausal women was 2.793 times compared with the non-menopause in Han group(OR:2.793,95%CI:1.770-4.406),and was 3.190 times in Yugur group(OR:3.190,95%CI:1.453-7.005).Women with longer duration of menopause have higher risk of suffering from osteoporosis in postmenopausal women(OR:3.295,95%CI:1.381-7.861).ConclusionsThere was no significant difference for the prevalence of osteoporosis between the Han and Yugur people,and the same result appeared in the urban and rural areas.Meanwhile,the peak value of male and female bone mineral density was in the age group of 20 to 29 years both in these two groups,and it was higher in Yugur group than that of the Han group.Besides,drunk appropriately and exercised regularly should be emphasized in order to prevent the occurrence of osteoporosis and enhanced bone strength.It is significant to understand the prevalence of osteoporosis and its related factors for bone health promotion in China. |
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