Multidimensionality of the PROMIS sleep disturbance 8b short form in working adult populations.

Objectives: The Patient-Reported Outcomes Measurement Information System sleep disturbance measures were developed using item response theory assumptions of unidimensionality and local independence. Given that sleep health is multidimensional, we evaluate the factor structure of the Patient-Reported Outcomes Measurement Information System sleep disturbance 8b short form to examine whether it reflects a unidimensional or multidimensional construct.

Methods: Six full-time working adult samples were collected from civilian and military populations.