Abstract
Objective: The aim of our study was to assess bone cancer mortality and the related social factors in Inner Mongolia in China. Methods: We obtained data from the Centers for Disease Control in Inner Mongolia from five monitoring points of the Death Registry System in Inner Mongolia from 2008 to 2012. We calculated the crude mortality rate for bone cancer. The χ2 test was used to examine differences in bone cancer mortality rates between sexes and years. Unconditional logistic regressions were applied to analyze the effect of socio-demographic characteristics by sex. Results: Between 2008 and 2012, the crude mortality rate of bone cancer was 1.12/100000 (95% confidence interval = 1.02-1.21). The bone cancer mortality was 2.24 in men and 1.25 in women, resulting in a male-female ratio of 1.8. No between-year difference in the mortality rate was observed between 2008 and 2012 (men: χ2 = 4.65, P = 0.325; women: χ2 = 2.21, P = 0.698). In general, mortality increased with increasing age. People with a lower education level exhibited an increased risk of bone cancer among both men and women. Jobs involving extensive manual labor decreased the likelihood of bone cancer mortality, and the odds ratio was higher for men than women (0.6 vs. 0.45). Unmarried people had a higher risk for bone cancer than married people. Conclusion: The mortality rate of bone cancer was not significantly different between men and women from 2008 to 2012. The risk of bone cancer increased with age among both sexes. Unmarried people and those with a low education status had an elevated risk of bone cancer, whereas employment in a field involving extensive manual labor appeared to be a protective factor against bone cancer.
Highlights
Bone cancer is rare, comprising less than 1% of all cancers; it is the seventh most common type of cancer in adolescents, representing 5% of all cancers in those aged 0 - 19 years [1]
We obtained data covering the period 2008-2012 based on International Classification of Diseases, Tenth Revision (ICD-10) codes from the Death Registry System (DRS) maintained by the Inner Mongolia Centers for Disease Control and Prevention (CDC) [8]
Occupational status, marital status, and location of residence were chosen as the indicators to assess the demographic characteristics of bone cancer mortality
Summary
Bone cancer is rare, comprising less than 1% of all cancers; it is the seventh most common type of cancer in adolescents, representing 5% of all cancers in those aged 0 - 19 years [1]. Because the incidence of bone cancer is clearly age-dependent, an analysis of its incidence by age groups would be more meaningful [2] [3]. Bone cancer imposes the risk of permanent restrictions in mobility, reduced function or even the loss of a limb, and possible physical disfigurement [4]. Reported or proposed risk factors for bone cancer include age, male sex, education, occupation, marital status, and area of residence [4] [5]. Our study was designed to assess bone cancer mortality rates and the associated social factors in the Inner Mongolia region of China. The data covered a large population and reflected the most recent status in Inner Mongolia
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