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Table 1 Components of COI

From: Cost of illness of the prostate cancer in Japan—a time-trend analysis and future projections

Components of COI Formulas / Data sources
COI    Cost of illness DC + MbC + MtC
DC    Direct cost HC + OC
  HC   Hospitalization cost iCd × THD
   iCd Inpatient cost per day Survey results of the Central Social Insurance Medical Council
   THD Total person-days of hospitalization Patient Survey
  OC   Outpatient cost oCd × TOVy
   oCd Outpatient cost per day Survey of Medical Care Activities in Public Health Insurance
   TOVy Total person-days of outpatient visits Patient Survey
MbC    Morbidity cost MbCi + MbCo
  MbCi   Morbidity cost of inpatients THD × LVd
   THD Total person-days of hospitalization Patient Survey
   LVd 1-day labour value per person Basic Survey on Wage Structure, Labour Force Survey, Estimates of Monetary Valuation of Unpaid Work
  MbCo   Morbidity cost of outpatients TOVy × LVd/2
   TOVy Total person-days of outpatient visits Patient Survey
   LVd/2 1/2-day labour value per person Basic Survey on Wage Structure, Labour Force Survey, Estimates of Monetary Valuation of Unpaid Work
MtC    Mortality cost NDy × LVl
  NDy   Number of deaths Vital Statistics
  LVl   Lifetime labour value per person Basic Survey on Wage Structure, Labour Force Survey, Estimates of Monetary Valuation of Unpaid Work, Life table