Line Plot from Scientific Research

Models for each regional morphometric measure were estimated in random sex-specific subsets of 200–15 000 participants, in increments of 200, generated from the study sample. Each line represents the values of the MAE or RMSE derived from the optimised MFPR models of all regional morphometric measure as a function of sample size; shadowed area represents the SD. The pattern identified was identical in both sexes. The data for females are shown here and for males inappendix 1 (p 13). Note that scales on y axes differ between plots. MAE=mean absolute error. MFPR=multivariate fractional polynomial regression. RMSE=root mean square error.

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