Box 1 Factors associated with absenteeism and presenteeism based on large registry data from the British Society for Rheumatology Biologics Register in Axial Spondyloarthritis (BSRBR-AS) [21••]

Absenteeism

Work-related factors

Previous history of presenteeism, labor-intensive job.

Patient-related factors

Higher disease activity, poorer physical function, poorer quality of life, activity impairment, spinal pain, fatigue, sleep disturbance

Presenteeism

Work-related factors

Labour-intensive job, previous history of absenteeism

Patient-related factors

Higher disease activity, poorer physical function, impaired spinal mobility, worse global disease status, poorer quality of life, worse spinal pain, fatigue, sleep disturbance, commencing biologic therapy, peripheral joint involvement