4 - The value of health Flashcards
what is health related quality of life?
A multidimensional concept that assesses how an individual’s physical, mental, emotional, and social well-being is affected by their health and any healthcare interventions or conditions they may have.
what is the EQ-5D’s?
A widely used health-related quality of life (HRQoL) assessment tool and method. Commonly used in healthcare research, clinical trials, and health economics to assess the impact of health conditions and interventions on a person’s well-being. Has five dimensions measured on 3 separate levels (243 different health states total)
what are the 5 dimensions measured by the EQ-5D?
Mobility: person’s ability to move about, including activities such as walking, running, or using mobility aids.
Self-Care: person’s ability to perform daily tasks related to personal hygiene and taking care of oneself.
Usual Activities: individual’s ability to carry out their usual activities, such as work, study, housework, or leisure activities.
Pain/Discomfort: extent to which an individual experiences pain or discomfort and how it affects their daily life.
Anxiety/Depression: person’s emotional well-being and psychological state, including feelings of anxiety or depression.
What is the rating scale method and its limitations?
A method of evaluating health states by presenting individuals with a vertical scale similar to a thermometer (100 grades with increments of 5 between 0-100, 0 being the worst possible health and 100 the best possible health). Values are then placed on a subjective scale of 0-1 based on an average of responses. Cannot be used to measure improvement of life. Provides little information.
explain the standard gamble method
A widely used technique in health economics and health-related research to measure individuals’ preferences and utilities for different health states. Requires asking respondents to make a choice between how long they would choose to live in a health state vs. a treatment that would either restore them to full health with some probability (p) or lead to instant death with a probability of (1-p).
what does the standard gamble method reveal when it comes to evaluating health?
Reveals the relative value they place on differences between the health state and full health, and the health state and death. Distorted by peoples risk-attitudes towards different health states.
what is the time trade-off method?
Employed to assess health-related quality of life (HRQoL) and to calculate quality-adjusted life years (QALYs), which are used in cost-utility analyses to evaluate the cost-effectiveness of healthcare interventions. Designed to quantify the trade-offs people are willing to make between the length of life and the quality of life when faced with different health conditions. Distorted by people’s perceptions of health in the future..
what is a health-adjusted life expectancy?
A population health measure that estimates the average number of years a person can expect to live in full health or without disability or disease. HALE combines information on mortality and morbidity to calculate the expected years of healthy life.
what’s the difference between morbidity and mortality?
morbidity = presence of illness/disability
mortality = life expectancy
what is QALY?
- An individual-level measure used in health economics to assess the effectiveness of healthcare interventions and treatments. It combines the length of life with the quality of life by assigning a utility or preference score to different health states, where 1 represents perfect health and 0 represents death, and values between 0 and 1 represent varying degrees of health-related quality of life.
- used at a national level
- we want to maximise it
what is a DALY?
Disability-adjusted Life Year
A comprehensive measure that quantifies the burden of disease and disability at the population level. It combines the years of life lost (YLL) due to premature mortality with the years lived with disability (YLD) to estimate the
how do you calculate a DALY?
DALYs are calculated by adding YLL and YLD, where YLL accounts for the years of life lost before the expected life span, and YLD accounts for the years lived with a health condition while adjusting for its severity.
Inverted Scoring: Full health is represented by a score of 0 while death is represented by 1. Scores in-between represent various disability weights.
how do you calculate a QALY?
QALYs are calculated by multiplying the time spent in a particular health state by the utility score associated with that state. For example, a year in perfect health is assigned a utility of 1, whereas a year in a health state with reduced quality of life may have a utility value less than 1.
what is a disability?
the loss of ability to carry out an activity that is considered normal for human beings, as a result of impairment (DALY)
how do you calculate cost-effectiveness?
CEA ratio = [unit of cost] / [QALYs]
Given the fixed amount of resource, health intervention A is more cost-effective than B if and only if A produces more QALYs than B.