Table 3.
Summary of the lifetime costs and savings from THA by age
| Age group | Incremental direct cost (A) (in USD) | Incremental indirect cost savings (B) (in USD) | Net societal savings (C) (in USD) | QALY gained (D) | ICER (C/D) |
|---|---|---|---|---|---|
| < 65 years | 28,067 | 125,958 | 97,892 | 7.0 | Dominant |
| 40–49 years | 28,905 | 218,738 | 189,833 | 8.3 | Dominant |
| 50–59 years | 28,128 | 136,023 | 107,894 | 7.1 | Dominant |
| 60–64 years | 27,564 | 65,659 | 38,095 | 6.0 | Dominant |
| ≥ 65 years | 32,323 | 10,052 | −22,271 | 4.2 | −5255 |
| 65–69 years | 30,147 | 28,157 | −1990 | 5.4 | −371 |
| 70–74 years | 30,162 | 5664 | −24,497 | 4.4 | −5618 |
| ≥ 75 years | 35,468 | 0 | −35,468 | 3.3 | −10,748 |
| All | 30,365 | 63,314 | 32,948 | 5.5 | Dominant |
ICER = incremental cost-effectiveness ratio; Net societal savings = Column B minus Column A; QALY = quality adjusted life year; weights by gender in age groups were calculated using 2011 National Inpatient Sample data.