Osteoporosis Clinical Trial
Official title:
Prevalence and Predictors of Osteoporosis in the Beijing's Urban Population
1. To establish a BMD reference database of Beijing's urban population, China.
2. To determine the prevalences and risk factors of osteoporosis and osteopenia in
Beijing's urban population, China.
3. To describe the 25OHD level and estimate the prevalence of vitamin D insufficiency and
deficiency of Beijing's urban population, China.
4. Estimation of the prevalence of osteoporotic fracture (vertebral) in over age of 60 of
Beijing's urban population, China.
With one of the biggest populations in the world, China was heavily suffered from
osteoporosis. The prevalence of osteoporosis in China even is increasing fast in recent
years, which are especially notable in urban population. This change maybe due to the
conditions including rapid economic growth, increase in life expectancy, and changes in
lifestyle. Studies in 1998 including 13 separately small samples (no more than 1000 people)
from 9 provinces in China showed that the prevalence of osteoporosis and osteopenia were
5.3-6.2% and 5.8-11.2%, respectively. These estimates were higher by approximately 1% than
those reported in 1995. In 2002, according to DEXA results in connection with population
census in 2000, Xiaoguang Cheng et al. took a survey in 600 people who were separately
studied in previously 10 research projects and find that patients with osteoporosis account
for approximately 6.97% of the total China population.
Although these studies have documented a remarkable increase in the prevalence of
osteoporosis in China, these estimations were all based on small samples. No risk factors
related with osteoporosis and osteopenia, esp. hypovitaminosis D on osteoporosis and
osteopenia, have been analyzed yet. So it is impossible to make any forecast of osteoporosis
or give any instruction for intervention.
Thus this study designed to provide current and reliable data on the prevalence of
osteoporosis and osteopenia and associated risk factors correlation coefficients in the
Beijing's urban adult population.
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Observational Model: Ecologic or Community, Time Perspective: Cross-Sectional
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