BASDAI cut-off values corresponding to ASDAS cut-off values.

The BASDAI values 1.9, 3.5, and 4.9 corresponded to the ASDAS-CRP values 1.3, 2.1, and 3.5, respectively. These cut-off values could be useful in clinical studies and real-world practice for determining disease activity status when ASDAS-CRP is unavailable.