There are a number of ways of categorizing instruments designed to measure PROs such as health status and quality of life (Fitzpatrick et al., 1992; Patrick and Erickson, 1993). Taxonomy of self-reported health status and quality of life measures is contained in Table 4.
Generic instruments measure the full range of health and quality of life, without focusing on specific areas. They are designed for use across a wide variety of populations.
Specific instruments are designed for application to individuals, conditions or diseases, domains, or populations.