What is a clinically significant BASFI score?

BASFI >4 (out of 10) reflects significant functional impairment. The minimal clinically important difference (MCID) is approximately 1.3 points on the 0-10 scale.

What activities does BASFI assess?

BASFI includes 10 items: putting on socks, bending to pick up a pen, reaching a high shelf, getting up from a chair without arms, getting up from the floor, standing for 10 min, climbing stairs, looking over shoulder, doing physically demanding activities, and full day activity.

How does BASFI relate to BASDAI?

BASDAI measures disease activity (inflammation). BASFI measures functional disability. Both are important outcomes but BASFI better reflects accumulated damage and functional loss over time.

BASFI Bath Ankylosing Spondylitis Functional Index

Calculate the Bath Ankylosing Spondylitis Functional Index (BASFI), a 10-item patient-reported outcome measuring functional ability in activities of daily living for ankylosing spondylitis and axial SpA.

Use the full interactive calculator below, or

Related Calculators

BASDAI AS

Hyper-niche Medical

ASDAS axSpA