Additional file 1: of Identifying subgroups of patients using latent class analysis: should we use a single-stage or a two-stage approach? A methodological study using a cohort of patients with low back pain

Overview of variables used in this study, classified by health domains. Documentation of data management. The variables were used in the single stage LCA (all at once) and in the first stage of the two-stage LCA (by health domain). (PDF 267 kb)