Table 4.
Incremental Costs According to Subgroups.
| Characteristic | No. of Participants |
Incremental Costs |
Incremental QALYs |
Cost per QALY |
|---|---|---|---|---|
| U.S. $ | QALY | U.S. $ | ||
| Sex | ||||
| Male | 31,446 | 1,683 | 0.0115 | 147,000 |
| Female | 21,856 | 1,557 | 0.0340 | 46,000 |
| Age at entry | ||||
| 55–59 yr | 22,773 | 1,541 | 0.0101 | 152,000 |
| 60–64 yr | 16,333 | 1,520 | 0.0320 | 48,000 |
| 65–69 yr | 9,504 | 1,900 | 0.0351 | 54,000 |
| 70–74 yr | 4,685 | 1,905 | 0.0163 | 117,000 |
| Smoking status | ||||
| Former | 27,643 | 1,661 | 0.0027 | 615,000 |
| Current | 25,659 | 1,601 | 0.0369 | 43,000 |
| Risk of lung cancer | ||||
| First quintile | 10,660 | 1,453 | 0.0086 | 169,000 |
| Second quintile | 10,661 | 1,454 | 0.0118 | 123,000 |
| Third quintile | 10,660 | 1,651 | 0.0061 | 269,000 |
| Fourth quintile | 10,661 | 1,672 | 0.0515 | 32,000 |
| Fifth quintile | 10,660 | 1,851 | 0.0354 | 52,000 |