Fig. 4.

Participant responses to case 3 (microangiopathic haemolytic anaemia associated with viral illness: acute HIV infection). Panel a: major morphological feature groups shown as the mean number of selections for the indicated feature. Features are divided according to diagnosis and variability is represented by error bars (SEM). Significant differences are indicated on the figure (Chi-square test) Panels b to e: priority score given to the first selection of any feature from a feature group (1 is the highest priority), selections are divided according to the given diagnosis. Significant differences are indicated on the figure (Mann–Whitney test). Figures represent each major morphological feature groups: platelets (A), fragmentation (B), haemolytic features (C), and reactive lymphocytes (D).