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The relationship of comorbidities to mortality and cause of death in patients with differentiated thyroid carcinoma

Authors
 Young Ki Lee  ;  Namki Hong  ;  Se Hee Park  ;  Dong Yeob Shin  ;  Cho Rok Lee  ;  Sang-Wook Kang  ;  Jandee Lee  ;  Jong Ju Jeong  ;  Kee-Hyun Nam  ;  Woong Youn Chung  ;  Eun Jig Lee 
Citation
 Scientific Reports, Vol.9(1) : 11435, 2019 
Journal Title
 Scientific Reports 
Issue Date
2019
Abstract
Understanding how comorbidities contribute to death in cancer patients is becoming an important topic. The present study assessed the role of comorbidities in overall mortality and causes of death in patients with differentiated thyroid carcinoma (DTC). This retrospective cohort study included 2070 patients who underwent thyroidectomy for DTC at a single institution between 2002 and 2005. Probabilities of overall, DTC-specific and other-cause death were examined according to the number of comorbidities, with consideration for competing events. The estimated 15-year cumulative incidences of overall, DTC-specific, and other-cause death were 7.3%, 1.6%, and 5.7%, respectively. Taking the group without comorbidities as a reference, we found that the group with 1-2 comorbidities and the group with ≥3 comorbidities had higher probabilities of other-cause death (subhazard ratios = 2.48 and 9.41, respectively; p < 0.01) and consequently shorter overall survival (hazard ratio = 1.95 and 5.33, respectively; p < 0.01), with adjustment for age, sex, and tumor-node-metastasis classification. In contrast, the probability of DTC-specific death was reduced in patients with ≥3 comorbidities (subhazard ratio = 6.81e-10, p < 0.01). For overall death, the relative proportion of death from DTC reduced when the number of comorbidities increased, and DTC-specific death was not observed in patients with ≥3 comorbidities. Our results show that death from DTC itself accounted for only a fraction of the overall deaths among patients who underwent surgery for DTC. Comorbidities increased overall mortality by increasing the probability of other-cause death. Patients with multiple comorbidities had a low probability of dying from DTC because they died earlier from comorbidities.
Files in This Item:
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DOI
10.1038/s41598-019-47898-8
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Surgery (외과학교실) > 1. Journal Papers
Yonsei Authors
Kang, Sang Wook(강상욱) ORCID logo https://orcid.org/0000-0001-5355-833X
Nam, Ki Heon(남기헌) ORCID logo https://orcid.org/0000-0001-7312-7027
Park, Se Hee(박세희)
Shin, Dong Yeob(신동엽) ORCID logo https://orcid.org/0000-0003-1048-7978
Lee, Eun Jig(이은직) ORCID logo https://orcid.org/0000-0002-9876-8370
Lee, Jan Dee(이잔디) ORCID logo https://orcid.org/0000-0003-4090-0049
Lee, Cho Rok(이초록) ORCID logo https://orcid.org/0000-0001-7848-3709
Chung, Woong Youn(정웅윤)
Jeong, Jong Ju(정종주) ORCID logo https://orcid.org/0000-0002-4155-6035
Hong, Nam Ki(홍남기) ORCID logo https://orcid.org/0000-0002-8246-1956
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/171268
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