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[Rheumatic diseases in China]

N Zhang¹, R Wigley, Q Zeng

¹Peking Union Medical College Hospital, Beijing.

Zhonghua Nei Ke Za Zhi

|February 1, 1995

Summary

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Rheumatic disease prevalence, including rheumatoid arthritis and ankylosing spondylitis, showed similar rates in northern and southern China. However, general rheumatic pain and specific issues like lumbar and knee problems were significantly more common in the north.

Area of Science:

Epidemiology
Rheumatology
Public Health

Background:

Geographical variations in rheumatic disease prevalence are not well-documented in China.
Understanding these differences is crucial for targeted public health interventions.

Purpose of the Study:

To investigate and compare the prevalence of rheumatic diseases among Han Chinese adults in northern and southern China.
To identify regional disparities in specific rheumatic conditions and symptoms.

Main Methods:

Survey of 4,192 adults in Beijing (north) and 5,057 in Shantou (south) using a standardized questionnaire.
Physical examinations, antinuclear antibody and rheumatoid factor tests, and radiographic imaging for positive responders.
Data analysis to compare prevalence rates of rheumatoid arthritis, ankylosing spondylitis, and other rheumatic complaints.

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Main Results:

Prevalence of definite rheumatoid arthritis was similar in the north (0.34%) and south (0.32%).
Ankylosing spondylitis prevalence was 0.26% in both regions.
General rheumatic pain, lumbar problems (5x more common in north), and knee problems (10x more common in north) were significantly higher in the north, especially in the 55-64 age group.

Conclusions:

While specific inflammatory rheumatic diseases show similar prevalence, general rheumatic symptoms and musculoskeletal complaints exhibit significant north-south disparities in China.
Further research is needed to explore environmental, cultural, and lifestyle factors contributing to these observed differences, particularly for back and knee pain.