Cost component | Variable | Description | Value | Calculation method | Sources |
---|---|---|---|---|---|
Direct cost | |||||
Medical cost | |||||
 | Total cost covered by insurance | Total annual cost covered by insurance in 2017, calculated by target groups | 10,120 million USD (in base-case) | A | 1) |
 | Ratio of out-of-pocket expense to payment for covered services | To estimate cost not covered by insurance | 0.248 | B | 2) |
 | Consumer Price Index | On healthcare component | 1.006 | C | 3) |
 | Total medical cost | Total annual cost including cost covered and not covered by insurance in 2019 | 12,710 million USD (in base-case) | D = A × B × C |  |
Nonmedical costs (transportation) | |||||
 | Round trip unit cost | Cost per patient for outpatient | 9.0 USD | E | 4) |
 | Round trip unit cost | Cost per patient for inpatient | 22.7 USD | F | 4) |
 | Number of visits | Per patient for outpatient | 9.51 | G | 1) |
 | Number of visits | Per patient for inpatient | 0.59 | H | 1) |
 | Number of patients with diabetes |  | 4,472,133 (in base-case) | I |  |
 | Total nonmedical cost | Total annual cost in 2019 | 442 million USD (in base-case) | J = (E × G + F × H) × I |  |
Total direct cost | 13,151 million USD (in base-case) | D + J |  | ||
Indirect cost | |||||
Caregiver’s cost | |||||
 | Care rate (inpatients employing a caregiver/total inpatients) |  | 69.70% | K | 5) |
 | Daily charge of a caregiver |  | 64.8 | L | 5) |
 | Average annual inpatient days per patient due to diabetes |  | 9.2 | M | 1) |
 | Total caregiver’s cost | 1860 million USD (in base-case) | N=K × L × M |  | |
Productivity loss cost due to morbidity | |||||
 | age |  | i | 1) | |
 | gender |  | j | 1) | |
 | Average annual hospitalization days with diabetic patients | Per patient by age and gender | Iij | 1) | |
 | Average daily income | By age and gender | Dij | 6) | |
 | Employment rates | Rates of 20–65 by age (i) and gender (g) | Pij | 7) | |
 | Average annual outpatient days with diabetic patients | Per patient by age and gender | Oij | 1) | |
 | Average hours per outpatient visit |  | V = 1.3 | 5) | |
 | Average hourly wage | By age and gender | Hij | 6) | |
 | Total productivity loss cost due to morbidity | 1461 million USD (in base-case) | Q |  | |
Productivity loss cost due to premature mortality | Â | ||||
 | Difference between the life expectancy of the age cohort of death and the age at the time of death | 1, 2, …, n | k | 8) | |
 | Age at the time of death |  | t | 1) | |
 | Annual discount rate | Per patient by age and gender | r = 5% | 9) | |
 | Wage growth rate | By age and gender | ω | 6) | |
 | Number of deaths caused by diabetes | By age and gender | Nij | 1) | |
 | Average annual income | By age and gender at age at the time of death | Yij | 6) | |
 | Employment rate at the time of (t + k) | By age and gender | Pij(t + k) | 7) | |
 | Total productivity loss cost due to morbidity |  | 1820 million USD (in base-case) | S |  |
Total indirect cost | 5141 million USD (in base-case) | N + Q + S |  |