“…As a result, HRQOL is used as an outcome variable following specific interventions or events. For example, HRQOL has been used as an outcome measure following joint replacements (Benroth & Gawande, 1999; Fortin et al, 1999; Hopman, Mantle, Towheed, & MacKenzie, 1999; Jones, Voak‐lander, Johnston, & Suarez‐Almazor, 2000; Knutsson & Bergbom, 1999; Lieberman et al, 1997; O'Boyle, McGee, Hickey, O'Malley, & Joyce, 1992; Randell et al, 2000), hip fractures (Borgquist, Nilsson, Lindelow, Wiklund, & Thorngren, 1992; Randell et al, 2000), or other surgical procedures, such as prostatectomy or vascular surgery (Cleary, Greenfield, & McNeil, 1991; Hayward et al, 1999; Holtzman, Caldwell, Walvatne, & Kane, 1999; Mangione et al, 1997). HRQOL also has been used to assess the impact over time of specific diseases or problems, such as rheumatoid arthritis (Kosinski, Zhao, Dedhiya, Osterhaus, & Ware, 2000) or fear of falling (Cummings, Salkeld, Thomas, & Szonyi, 2000).…”