COVID-19 Global Rheum Alliance Registry: prediction of ARDS by machine learning algorithm in a model using 42 variables including: demographics, rheumatic D, meds and comorb with Sens 0.81, Spe 0.49, AUC 075. Interesting model for close monitoring #OP0288 @Rheumnow #EULAR2021 https://t.co/9YY0jzDx59