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Crude IR per 100,000 inhabitants and World Health Organization age-standardized IRR, with 95% CI and P values, for bone and soft tissue sarcoma in the Aarhus Sarcoma Registry from 1979 to 2008 according to age (years) and gender (n = 1827).
Abbreviations: CI, confidence intervals; IR, incidence rate; IRR, incidence rate ratios.
