RESUMEN
Objective To investigate the prevalence rate of thyroid nodules as well as related influencing factors. Methods In this clinical study, 8,912 healthy people were included, involving medical staff, teachers, electric enterprise staff and civil authorities from January to December in 2014 . The prevalence rate of thyroid nodules and related influencing factors were investigated . Results (1) The prevalence rate of thyroid nodules was 40.4%, 34.9%for male and 46.7%for female. The prevalence of female was higher than that of male (P<0.001);(2) The prevalence rate of thyroid nodules showed a trend of increase with age (P<0.01);(3) The prevalence rate of thyroid nodules in medical staff and teachers was significantly higher than others (P<0.001);(4) The difference was statistically significant in BMI, blood pressure, blood lipid, blood glucose in thyroid nodule group and non thyroid nodules group (P<0.001). All indexes mentioned above of thyroid nodule group was much higher than those of non thyroid nodules group. (5) The prevalence rate of breast hyperplasia of females under the age of fifty years was significantly higher than those of non thyroid nodule group (P<0.001). Conclusion The prevalence rate of thyroid nodules is high. It is related to gender, age, occupation and estrogen. Effective measures should be taken to change people's bad habits, blood sugar control and blood pressure, reduce BMI and work tension in order to reduce the incidence of thyroid nodules.