Additional file 2: of Serum levels of B-cell activating factor of the TNF family (BAFF) correlate with anti-Jo-1 autoantibodies levels and disease activity in patients with anti-Jo-1positive polymyositis and dermatomyositis

Abstract

The application method of the hierarchical linear model (HLM). Detailed explanation of HLM principles, its use for the unbalanced designs, and interpretation of results. (PDF 199 kb