Primary malignant bone tumors incidence, mortality, and trends in China from 2000 to 2015 / 中华医学杂志(英文版)

BACKGROUND@#Primary malignant bone tumors are uncommon, and their epidemiological features are rarely reported. We aimed to study the incidence and death characteristics of bone tumors from 2000 to 2015.@*METHODS@#Population-based cancer registries submitted registry data to National Central Cancer Registry of China (NCCRC). The data collected from 501 local cancer registries in China were assessed using NCCRC screening methods and criteria. Incidence and mortality rates of primary bone tumor were stratified by age group, gender, and area. Age-standardized incidence and mortality rates were adjusted using the Chinese standard population in 2000 and Segi's world population. The annual percentage change (APC) in rate was calculated using the Joinpoint Regression Program.@*RESULTS@#Data from 368 registries met quality control criteria, of which 134 and 234 were from urban and rural areas, respectively. The data covered 309,553,499 persons. The crude incidence, age-standardized incidence, and crude mortality rates were 1.77, 1.35, and 1.31 per 100,000, respectively. Incidence and mortality rates were higher in males than those in females; they showed downward trends, with declines of 2.2% and 4.8% per year, respectively, and the rates in urban areas were lower than those in rural areas. Significant declining trends were observed in urban areas. Stable trends were seen in rural areas during 2000 to 2007, followed by downward trends. Age-specific incidence and mortality rates showed stable trends in the age group of 0 to 19 years, and downward trends in the age group elder than 19 years.@*CONCLUSIONS@#The incidence and mortality rates of primary malignant bone tumors in rural areas were higher compared to those in urban areas. Targeted prevention measures are required to monitor and control bone tumor incidence and improve the quality of life of affected patients. This research can provide a scientific basis for the prevention and control of bone tumors, as well as basic information for follow-up research.

Prevalence and risk factors of thyroid diseases in the physical examination population of Hohhot / 中华地方病学杂志

Objective:To explore the prevalence and risk factors of thyroid diseases in the physical examination population of Hohhot.Methods:From July 2017 to July 2018, 3 100 health examinees from Inner Mongolia National Examination Medical Center were selected as subjects for questionnaire survey, thyroid function test and thyroid ultrasound examination; a multinomial logistic regression model was used to analyze the relationship between relevant investigation factors and different types of thyroid diseases (simple thyroid nodules, simple thyroid dysfunction, and thyroid dysfunction with nodules).Results:Among the 3 100 healthy examinees, there were 2 885 effective responders, including 743 males and 2 142 females, aged (46.23 ± 12.32) years; the simple thyroid nodules, simple thyroid dysfunction, and thyroid dysfunction with nodules were 909, 648, and 619 cases, respectively, and the detection rates were 31.51%, 22.46%, and 21.46%, respectively. Logistic regression analysis results showed that age [35 - 54 years old: odds ratio ( OR) = 1.30, 95% confidence interval ( CI): 1.01 - 1.68; ≥55 years old: OR = 2.30, 95% CI: 1.68 - 3.14, P < 0.05], gender ( OR = 1.65, 95% CI: 1.32 - 2.07, P < 0.05), obesity ( OR = 1.35, 95% CI: 1.08 - 1.70, P < 0.05), and mental stress [significant: OR = 1.64, 95% CI: 1.09 - 2.48; some: OR = 1.54, 95% CI: 1.02 - 2.32, P < 0.05] were the risk factors affecting the occurrence of simple thyroid nodules. The age (35 ~ 54, ≥55 years old), gender, bad mood (a little), and mental stress (significant) were risk factors that affected the occurrence of simple thyroid dysfunction; eating high iodine food was its protective factor. The age (35 ~ 54, ≥55 years old), gender, obesity, and thyroid family genetic history were risk factors for thyroid dysfunction with nodules; the consumption of iodized salt was its protective factor. Conclusions:Older women are high-risk groups for thyroid diseases. Obesity, bad mood, mental stress will increase the risk of the disease. Daily consumption of iodized salt and moderate consumption of high iodine food can reduce the risk of the disease.

Analysis of thyroid function under different iodine nutritional status / 中华地方病学杂志

Objective To understand the iodine nutritional status of medical examination people and the thyroid dysfuction rates under different urinary iodine.Methods A total of 2 650 medical examination people from Inner Mongolia National Examination Medical Center from March to December of 2018 were selected.The average age was (46.2 ± 12.5) years old,including 697 males and 1 953 females.Blood samples were collected for determination of thyroid function [thyroid stimulating hormone (TSH),thyroid peroxidase antibody (TPOAb),thyroglobulin antibody (TgAb),free thyroxine (FT4),and free triiodothyronine (FT3)],and according to the results of the examination,people were divided into normal thyroid function,subclinical hypothyroidism,subclinical hyperthyroidism,hypothyroidism,hyperthyroidism,autoimmune antibody abnormalities,and other abnormal groups.Urine samples were collected to detect urinary iodine levels,to analyze the thyroid dysfuction rates of each group people and different urinary iodine.The thyroid function was detected by automatic electrochemiluminescence immunoassay analyzer,the urinary iodine was determined by arsenic cerium catalytic spectrophotometry.Results Among the 2 650 medical examination people,there were 1 270 patients with abnormal thyroid function,and the total abnormal rate was 47.92％.The abnormal rates of males and females were 28.84％ (201/697) and 54.74％ (1 069/1 953),respectively,and the abnormal rate of females was higher than that of males (x2 =376.19,P ＜ 0.05).The urinary iodine medians of each group were 145.38,152.60,103.21,176.31,134.17,138.92,and 127.00 μg/L,all in the appropriate range of iodine (100-199 μg/L).Thyroid abnormal rates [55.56％ (125/225),50.86％ (445/875)] of urinary iodine ≥ 300 μg/L (iodine excess) group and ＜ 100 μg/L (iodine deficiency) group were higher than that of 100-199 μg/L group [44.70％ (460/1 029),x2 =12.65,12.61,P ＜ 0.05].Among thyroid abnormal people,autoimmune antibody abnormalities people was the most,accounting for 69.61％ (884/1 270).Urinary iodine was positively correlated with FT4 and FT3 (r =0.04,0.05,P ＜ 0.05);FT4 was negatively correlated with TSH and TgAb (r =-0.20,-0.73,P ＜ 0.05),and it was positively correlated with FT3 (r =0.52,P ＜ 0.05);TPOAb was positively correlated with TgAb (r =0.64,P ＜ 0.05).Conclusions Urinary iodine of medical examination people is in the appropriate range of iodine,indicating that the overall iodine nutritional status is good.However,some people still have iodine excess and iodine deficiency,both of which lead to an increase in thyroid abnormal rate.