Rheumatoid arthritis (RA) is a chronic autoimmune
inflammatory disorder of flexible joints with unknown etiology,
which affects 1% of the world’s population. The aim of this 2010
study was to investigate the association between the level of
education, tonsillectomy and appendectomy in the patients’ history
with RA. The study was carried out in Hamedan City, in the West
Patients and Methods: As a patient-control study, information
from 128 patients and 130 controls, matched for age and gender, was
collected by questionnaires and physical exams with the consent of
both patients and controls, followed by an SPSS statistical analysis
(Pearson’s Chi-Square test).
Results: In patient and control groups, there were 116 and
117 females, respectively, and the rest were males. Statistical
analysis showed that there is no significant association between
level of education or tonsillectomy with RA (p>0.05), whereas
appendectomy was significantly associated inversely with the risk
of RA (p < 0.05).
Conclusion: Considering previous global investigations on this
topic with different results and the results of our study, it seems
that more studies are needed to determine the definitive association
between level of education, tonsillectomy and appendectomy with
the risk of RA.