Introduction

The following tablegives the cost, increase in life years, and the rating of quality of life for four different treatments.

Treatment	Cost	Increase in Life Years	Rating of Quality of Life	QALY	Cost:QALY
A	4,600	16	0.16
B	8,600	18	0.22
C	12,600	22	0.28
D	10,000	20	0.25

Instructions

1. Calculate the QALY for each treatment.
2. Interpret the QALY calculated for each treatment.
3. Calculate the Cost:QALY ratio for each treatment.
4. Interpret each ratio.
5. Based on QALY only, which treatment would be most effective?
6. Based on Cost:QALY, which treatment would be most effective?