Fig 1.

Faecal scores from cats enrolled in trials from France (a) and Canada (b) assessing the efficacy of a psyllium-enriched diet for management of feline constipation. The boxes depict interquartile range (top and bottom of box), the vertical lines show the range, median is represented by the bold horizontal line, and outliers are shown as separate points. T0: start of the trial; T1: recheck at 1 month; T2: recheck at 2 months. Vertical range and median lines are not shown when they coincide with the limits of the interquartile range boxes. In both trials, median faecal score improved significantly throughout the course of the study (Cusick's test for trend P < 0.001).