Fig. 2From: A practical solution to estimate the sample size required for clinical prediction models generated from observational research on dataImpact of the number of predictor variables on the sample size. Variability in the sample size relative to the number of predictor variables included in model development for neuroblastoma (A), HR neuroblastoma (B) and DIPG (C). DIPG diffuse intrinsic pontine glioma, HR high-risk, NB neuroblastomaBack to article page