I think you should go ahead with what you have now, we don't want to delay things. But having arrived at this point, I note the core sets show strong overlap, so in a revision you could merge them and make the differences situation-specific.
Thanks for this comment. The decision to develop two core sets was made very early in the development process, with a vote to take this approach at a virtual OMERACT SIG in 2020. We used this approach in all the Delphi exercises. This aligns with the approach taken for the OMERACT core domains for gout, another crystal arthritis (gout flare domains and long-term gout domains). For CPPD, the core outcomes for acute CPP crystal arthritis and the core outcomes for chronic and recurrent CPPD disease are not the same, although there are some overlapping domains (for example pain intensity, overall function, and patient global assessment).
