Patient preferences in surgery for scoliosis.

To assess individual preferences for a method of scoliosis surgery, we surveyed 224 teen-age patients, their parents, orthopaedic surgeons, and other health professionals. Rather than asking the respondents directly for the relative importance that they would assign to the four possible outcomes, we employed conjoint analysis, a preference measurement technique that is widely used in marketing and psychology. In conjoint analysis, respondents explicitly trade off the relative desirability of certain aspects of the outcome of scoliosis surgery--for example, between greater degree of curve correction or greater risk of reoperation. This study indicated that risk of nerve damage had the highest relative importance to the respondents, followed by risk of reoperation, curve correction, and aftercare, in that order. This ranking was found in all five groups of respondents.