Fig. 2.

PCA scores plot (R²X = 0·42 Q² = 0·06) showing a. first and second principal components, comparing samples taken at the first time point from patients admitted with brain injuries (blue circles) to those with pneumonia (red squares). b. PCA scores plot colored according to ethnicity, White (green triangles), Afrocaribbean (grey diamonds), Indian Asia (purple pentagons) and others (blue hexagons) c. First and sixth components of the PCA scores plot for samples taken at the first time point from patients admitted with brain injuries (blue circles) and those with pneumonia (red squares). Dots representing samples taken from patients with pneumonia have a tendency to cluster in the lower half of the plot.