Use of summary scores or single items in LCA?

Video abstract of Original Research paper “Using existing questionnaires in latent class analysis: should we use summary scores or single items as input? A methodological study using a cohort of patients with low-back pain” published in the open access journal Clinical Epidemiology by authors Nielsen et al. Read the original research paper here: https://www.dovepress.com/using-existing-questionnaires-in-latent-class-analysis-should-we-use-s-peer-reviewed-article-CLEP