Blood Res.  2021 Dec;56(4):301-314. 10.5045/br.2021.2021187.

Twenty-year incidence trend of hematologic malignancies in the Republic of Korea: 1999‒2018

Affiliations
  • 1Department of Occupational and Environmental Medicine, Chonnam National University Medical School and Chonnam National University Hwasun Hospital, Hwasun, Korea
  • 2Gwangju Jeonnam Regional Cancer Center, Hwasun, Korea
  • 3Jeollanamdo Public Health Policy Institute, Jeollanamdo Provincial Office, Muan, Korea
  • 4Department of Laboratory Medicine, Chonnam National University Medical School and Chonnam National University Hwasun Hospital, Hwasun, Korea

Abstract

Background
In this study, we presented the national cancer statistics on the incidence of hematologic malignancies in the Republic of Korea (ROK) over a period of 20 years, from 1999 to 2018.
Methods
We obtained data on the incidence of hematologic malignancies using the Korean Statistical Information Service (KOSIS). For each hematologic malignancy, the number of cases, crude incidence rate, and age-standardized incidence rate were calculated, and the statistical trends were confirmed by Poisson regression and Joinpoint regression analysis.
Results
All the investigated hematologic malignancies showed a statistically significant increase in incidence over 20 years. The 20-year trend of the age-standardized incidence rate was as follows: non-Hodgkin lymphoma [average annual percent change (AAPC)=2.26%, P-trend <0.05], leukemia (AAPC=0.94%, P-trend <0.05), myeloid leukemia (AAPC=1.44%, P-trend <0.05), multiple myeloma (AAPC=3.05%, P-trend <0.05), myeloproliferative disorders (AAPC=9.87%, P-trend <0.05), myelodysplastic syndrome (AAPC=7.59%, P-trend <0.05), malignant immunoproliferative diseases (AAPC=11.82%, P-trend <0.05), lymphoid leukemia (AAPC=2.21%, P-trend <0.05), and Hodgkin lymphoma (AAPC=4.04%, P <0.05).
Conclusion
It was confirmed that the incidence of hematologic malignancies has increased significantly in the ROK over the past 20 years. This study can be used as foundational data source for future studies. In addition, it can aid in the necessary actions of predicting future incidences and establishing future healthcare policies.

Keyword

Epidemiology; Hematologic neoplasms; Neoplasms; Registries; Statistics

Figure

  • Fig. 1 Annual incidence of non-Hodgkin lymphoma in the Republic of Korea. Number of non-Hodgkin lymphoma cases (A). Crude and age-standardized incidence rate of non-Hodgkin lymphoma per million using the 2000 Korean standard population (B). a)Comparing 1999 and 2018. b)Average annual percent change by Joinpoint regression analysis. c)Incidence rate ratio per year from 1999 to 2018 as calculated by Poisson regression. Abbreviations: AAPC, average annual percent change; ASR, age-standardized incidence rate; CI, confidence interval; CIR, crude incidence rate; IRR, incidence rate ratio.

  • Fig. 2 Annual incidence of leukemia in the Republic of Korea. Number of leukemia cases (A). Crude and age-standardized incidence rate of leukemia per million using the 2000 Korean standard population (B). a)Comparing to 1999 and 2018. b)Average annual percent change by Joinpoint regression analysis. c)Incidence rate ratio per year from 1999 to 2018 as calculated by Poisson regression. Abbreviations: AAPC, average annual percent change; ASR, age-standardized incidence rate; CI, confidence interval; CIR, crude incidence rate; IRR, incidence rate ratio.

  • Fig. 3 Annual incidence of myeloid leukemia in the Republic of Korea. Number of myeloid leukemia cases (A). Crude and age-standardized incidence rate of myeloid leukemia per million using the 2000 Korean standard population (B). a)Comparing 1999 and 2018. b)Average annual percent change by Joinpoint regression analysis. c)Incidence rate ratio per year from 1999 to 2018 as calculated by Poisson regression. Abbreviations: AAPC, average annual percent change; ASR, age-standardized incidence rate; CI, confidence interval; CIR, crude incidence rate; IRR, incidence rate ratio.

  • Fig. 4 Annual incidence of multiple myeloma in the Republic of Korea. Number of multiple myeloma cases (A). Crude and age-standardized incidence rate of multiple myeloma per million using the 2000 Korean standard population (B). a)Comparing 1999 and 2018. b)Average annual percent change by Joinpoint regression analysis. c)Incidence rate ratio per year from 1999 to 2018 as calculated by Poisson regression. Abbreviations: AAPC, average annual percent change; ASR, age-standardized incidence rate; CI, confidence interval; CIR, crude incidence rate; IRR, incidence rate ratio.

  • Fig. 5 Annual incidence of myeloproliferative disorders in the Republic of Korea. Number of myeloproliferative disorders cases (A). Crude and age-standardized incidence rate of myeloproliferative disorders per million using the 2000 Korean standard population (B). a)Comparing 1999 and 2018. b)Average annual percent change by Joinpoint regression analysis. c)Incidence rate ratio per year from 1999 to 2018 as calculated by Poisson regression. Abbreviations: AAPC, average annual percent change; ASR, age-standardized incidence rate; CI, confidence interval; CIR, crude incidence rate; IRR, incidence rate ratio.

  • Fig. 6 Annual incidence of myelodysplastic syndrome in the Republic of Korea. Number of myelodysplastic syndrome cases (A). Crude and age-standardized incidence rate of myelodysplastic syndrome per million using the 2000 Korean standard population (B). a)Comparing 1999 and 2018. b)Average annual percent change by Joinpoint regression analysis. c)Incidence rate ratio per year from 1999 to 2018 as calculated by Poisson regression. Abbreviations: AAPC, average annual percent change; ASR, age-standardized incidence rate; CI, confidence interval; CIR, crude incidence rate; IRR, incidence rate ratio.

  • Fig. 7 Annual incidence of malignant immunoproliferative diseases in the Republic of Korea. Number of malignant immunoproliferative diseases cases (A). Crude and age-standardized incidence rate of malignant immunoproliferative diseases per million using the 2000 Korean standard population (B). a)Comparing 1999 and 2018. b)Average annual percent change by Joinpoint regression analysis. c)Incidence rate ratio per year from 1999 to 2018 as calculated by Poisson regression. Abbreviations: AAPC, average annual percent change; ASR, age-standardized incidence rate; CI, confidence interval; CIR, crude incidence rate; IRR, incidence rate ratio.

  • Fig. 8 Annual incidence of lymphoid leukemia in the Republic of Korea. Number of lymphoid leukemia cases (A). Crude and age-standardized incidence rate of lymphoid leukemia per million using the 2000 Korean standard population (B). a)Comparing 1999 and 2018. b)Average annual percent change by Joinpoint regression analysis. c)Incidence rate ratio per year from 1999 to 2018 as calculated by Poisson regression. Abbreviations: AAPC, average annual percent change; ASR, age-standardized incidence rate; CI, confidence interval; CIR, crude incidence rate; IRR, incidence rate ratio.

  • Fig. 9 Annual incidence of Hodgkin lymphoma in the Republic of Korea. Number of Hodgkin lymphoma cases (A). Crude and age-standardized incidence rate of Hodgkin lymphoma per million using the 2000 Korean standard population (B). a)Comparing 1999 and 2018. b)Average annual percent change by Joinpoint regression analysis. c)Incidence rate ratio per year from 1999 to 2018 as calculated by Poisson regression. Abbreviations: AAPC, average annual percent change; ASR, age-standardized incidence rate; CI, confidence interval; CIR, crude incidence rate; IRR, incidence rate ratio.


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