Check out the PROMIS International paper (available through open access): Alonso, J. et al., 2013. The case for an international patient-reported outcomes measurement information system (PROMIS) initiative. Health and quality of life outcomes, 11(210), pp.1–5.
PROMIS is a US research initiative that aims to standardize and Patient-Reported Outcome Measurement by using modern psychometric methods such as item banking and computer-adaptive testing.