This repository contains all code to partially reproduce the analyses from the publication Age-, sex-, and country-specific reference values of PROMIS Physical Functioning, Upper Extremity, and Pain Interference item banks were established in general populations from the USA, UK, and Germany.
It is not possible to provide the parameters for PROMIS measures and their item stems freely, so those have been removed after the analyses from the repository and need to be obtrained from https://www.healthmeasures.net/.