A REVIEW AND META-ANALYSIS OF COLORECTAL CANCER UTILITIES
Author(s)
Djalalov S1, Hoch J2, Tomlinson G31CRICH, Toronto, ON, Canada, 2Cancer Care Ontario, Toronto, ON, Canada, 3Toronto General Research Institute, Toronto, ON, Canada
Presentation Documents
OBJECTIVES: To perform a systematic review of the literature on the utility weights for colorectal cancer (CRC) health states; to determine the effects of study characteristics and role of “time to/from initial care” on utility values. METHODS: In a systematic review we identified 26 articles in English, providing 161 unique utilities for CRC health states elicited from 3574 respondents. Some utilities were estimated from SF-36 scores. Data were analyzed using Ordinary Least Squares and Linear Mixed- Effects with CRC cancer type, condition, stage, time to/from initial care, instrument, administration and study design as independent variables. RESULTS: In the base model, the estimated utility of the reference case (scenario of a CRC patient on stage I-III in continues care and more than 1 year post-operation, rated by using EQ5D/HUI3) was 0.72. Cancer type, condition, stages, time to/from initial care, instruments and study design were associated with utility differences of 0.08 to 0.30 (P <0.05). Utilities derived by using EQ5D/HUI3 instrument were 0.09 lower than SG/TTO, 0.08 lower than EQ5Dvas and 0.09 lower than SF-36 (P <0.01) in the base model of OLS analysis. Those utilities differences were significantly larger in the supplemental model. Utilities elicited at “post-operation more than 1 year” were 0.15 higher than “preoperative”, 0.30 higher than “post-operation 1 year” in supplemental model. CONCLUSIONS: The CRC utilities review shows a lack of quality of life (QoL) studies for surveillance and terminal care that might cause high level uncertainty in the cost-effectiveness analysis results. Pre- and post-operative health states and time to/from health intervention are important factors that influence QoL. Utilities appear sensitive to factors such as cancer type, time to/from initial care and utility instruments.
Conference/Value in Health Info
2010-05, ISPOR 2010, Atlanta, GA, USA
Value in Health, Vol. 13, No. 3 (May 2010)
Code
PCN103
Topic
Patient-Centered Research
Topic Subcategory
Health State Utilities
Disease
Oncology