Handling of missing component information for common composite score outcomes used in axial spondyloarthritis research when complete-case analysis is unbiased. - Polysopoulos C; Georgiadis S; Ørnbjerg LM; Scherer A; Di Giuseppe D; Hetland ML; Nissen MJ; Jones GT; Glintborg B; Loft AG; Wallman JK; Pavelka K; et al. (BMC medical research methodology, 2025)