Answer

The correct answer is 3 Life-Years gained and 3.1 QALYs gained.

 

Life-Years:

Intervention 2 - Intervention 1 = 10 - 7 = 3 Life-Years

 

QALYs:

Intervention 1 = (2 x 1) + (3 x 0.8) + (3 x 0.4) = 2 + 2.4 + 1.2 = 5.6 QALYs

Intervention 2 = (7 x 0.9) + (4 x 0.6) = 6.3 + 2.4 = 8.7 QALYs

=> Incremental QALYs due to Intervention 2 = 8.7 - 5.6 = 3.1 QALYs