LOINC long common name : Clinical disease activity index [CDAI];
LOINC description : The Clinical Disease Activity Index (CDAI) instrument contains several measurements
or scores used to determine rheumatoid arthritis disease activity. The overall CDAI
score is calculated using a linear sum of the following: tender 28 joint count, swollen
28 joint count, patient global assessment (PtGA), and physician (or evaluator) global
assessment (EGA). The CDAI uses the same measures as the Simple disease activity index
(SDAI, [LOINC: 75843-3]) except it does not include the measurement of C-reactive
protein levels, an acute phase reactant.;