Table 1 The elements used for calculation in future prediction of Cost of illness (COI)
From: Cost of illness of the stomach cancer in Japan - a time trend and future projections
Model | Item | Elements used for calculation | Fixed or Varied |
|---|---|---|---|
Fixed model | Number of deaths | Mortality rate | Fixed |
The population estimates | Varied | ||
Direct cost | The expenses of outpatient visit and hospitalization | Fixed (Calculated using the unit cost in 2008) | |
Total person-days of outpatient visit | Varied | ||
Total person-days of hospitalization | Varied | ||
Morbidity cost | Number of times of outpatient visit per population | Fixed | |
Number of times of hospitalization per population | Fixed | ||
Average length of stay | Fixed | ||
The population estimates | varied | ||
Labor-value | Fixed (one day labor-value loss for one hospitalized day and a half day labor-value loss for one outpatient visit) | ||
Mortality cost | Number of deaths | Varied | |
Life expectancy | Fixed | ||
Labor-value | Fixed | ||
Discount rate: 3% | Fixed | ||
Variable model • Logarithm model • Linear model • Mixed model | Number of deaths | Mortality rate | Varied (Calculated using the trend line formula) |
The population estimates | Varied | ||
Direct cost | The expenses of outpatient visit and hospitalization | Fixed (Calculated using the unit cost in 2008) | |
Total person-days of outpatient visit | Varied | ||
Total person-days of hospitalization | Varied | ||
Morbidity cost | Number of times of outpatient visit per population | Varied (Calculated using the trend line formula)(minimum value: the previous value before 0) | |
Number of times of hospitalization per population | Varied (Calculated using the trend line formula)(minimum value: the previous value before 0) | ||
Average length of stay | Varied (Calculated using the trend line formula)(minimum value: 8.2days) | ||
The population estimates | Varied | ||
Labor-value | Fixed (one day labor-value loss for one hospitalized day and a half day labor-value loss for one outpatient visit) | ||
Mortality cost | Number of deaths | Varied | |
Life expectancy | Fixed | ||
Labor-value | Fixed | ||
Discount rate: 3% | Fixed |