Risk Factors for Antinuclear Antibody Positivity in Healthy Individuals
Author Information
Author(s): Li Quan-Zhen, Karp David R, Quan Jiexia, Branch Valerie K, Zhou Jinchun, Lian Yun, Chong Benjamin F, Wakeland Edward K, Olsen Nancy J
Primary Institution: University of Texas Southwestern Medical Center at Dallas
Hypothesis
What demographic and immunological features are associated with ANA positivity in clinically healthy persons?
Conclusion
Female gender and organ-specific autoimmunity are significant risk factors for ANA positivity.
Supporting Evidence
- 615 out of 1159 individuals tested were ANA positive.
- ANA levels were significantly higher in females than in males.
- Age was not significantly associated with ANA levels.
Takeaway
Some healthy people have a positive test for antinuclear antibodies, but it doesn't always mean they will get sick; women are more likely to test positive.
Methodology
The study analyzed blood samples from healthy individuals and patients with systemic lupus erythematosus to assess ANA levels and associated features.
Potential Biases
Potential bias due to the lack of information on medication use and the cross-sectional nature of the study.
Limitations
The study's cross-sectional design limits insights into changes over time and does not account for medication use.
Participant Demographics
The study included 1159 individuals: 401 healthy controls, 294 patients with SLE, and others with various autoimmune conditions.
Statistical Information
P-Value
0.0030
Confidence Interval
1.059 to 1.390
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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