Using conjoint analysis to measure the importance of psychosocial traits in the choices of bladder management after spinal cord injury.

OBJECTIVE

To conduct a conjoint analysis experiment to better understand the psychosocial priorities related to bladder management in individuals after spinal cord injury (SCI).

METHODS

We developed a conjoint analysis survey that included 11 psychosocial attributes phrased in the context of bladder management (including attributes for urinary infections, and incontinence). We then performed a multi-center prospective cross-sectional study of adults with existing SCI which consisted of a baseline interview, followed by the online conjoint analysis survey (delivered through Sawtooth software). Hierarchical Bayes random effects regression analysis was used to determine the relative importance of the attributes.

RESULTS

A total of 345 people complete the study. There was good representation of both men and women, and individuals with cervical and thoracic or lower lesions. The most important attribute was the frequency of urinary infections. Age, sex, and level of SCI were generally not related to the attributes measured in the study. In the subgroup of 256 patients who used a catheter for bladder management, significantly more importance was placed on urinary tract infections, time, fluid intake, and social life among indwelling catheter users compared to intermittent catheter users.

CONCLUSIONS

Most bladder-related psychosocial priorities are not impacted by a patient's age, sex or level of SCI. Differences in psychosocial priorities between indwelling and intermittent catheter users may represent factors that should be focused on to optimize bladder management after SCI.