Development and Test of a New Method for Preference Measurement for Multistate Health Profiles

• Main Author: Kongnakorn, Thitima
• Format: Others
• Language: en_US
• Published: Georgia Institute of Technology 2005
• Subjects: Multistate health profiles; Cost effectiveness analysis; Preference measurement; Utility theory; Additive independence; Health policy
• Online Access: http://hdl.handle.net/1853/4946

This dissertation aims at developing and testing a new method that can better capture preferences for multistate health profiles. The motivation arose from the failure of the QALY (Quality-Adjusted Life Year) model in adequately capturing preferences in multistate health profiles. The current QALY-based technique captures preferences for multistate health profiles by evaluating each health state in the profile independently of other states. As the past literature showed, this additive independence condition does not hold in practice and hence such approach is inadequate. To address this issue, this study proposes a novel approach to measure preferences for multistate health profiles by looking at two consecutive health states at a time. It hypothesizes that an evaluation of the future health state is dependent or "conditioned" on the level of the preceding, or current, health state. Characteristics of the current health state that are suspected to impact the resulting conditional preference scores for future health state are systematically explored in a carefully designed empirical study. The interested factors include duration of the current health state, direction of change and amplitude of change between the current and future health states. A 2