Fig. 3: Sparse Partial Least Squares Discriminant analysis of patient randomised to ketogenic feeding on Day 10 (red triangle) and control feeding on day 10 (blue sphere).
From: A pilot study of alternative substrates in the critically Ill subject using a ketogenic feed

Clockwise from top right: A polar positive, B non-polar positive, C non-polar negative, D polar negative. Error rates are <20% (12%, 15%, 14% and 17% respectively), suggesting plot is a result of real variation. n = 14 subjects in the ketogenic arm and n = 15 subjects in the control arm.