The Association between Charlson Comorbidity Index and the Medical Care Cost of Cancer: A Retrospective Study

Table 4

Association among comorbid characteristics and medical care cost based on claim data.

	Breast/colon cancer	Stomach/lung cancer
Chronic disease	Unadjusted: β = 1.84^+ (CI: 1.29–1.57); Adjusted^a: β = 1.79 (CI: 1.64–1.86)	Unadjusted: β = 1.03 (CI: 0.93–1.15); Adjusted^a: β = 1.63 (CI: 0.89–2.96)
Acute disease	Unadjusted: β = 1.03 (CI: 0.92–1.17); Adjusted^a: β = 1.21^+ (CI: 1.00–1.49)	Unadjusted: β = 0.03 (CI: 0.94–1.17); Adjusted^a: β = 0.85 (CI: 0.74–0.99)

< 0.05.
< 0.10.
Control variable = sex, age, and stage of cancer.