Boxplots of coefficient of variation (CV) of protein distribution over the three daily mealtimes in non-frail, pre-frail and frail participants. The boxes represent the interquartile range with the bold horizontal lines denoting median CV. The whiskers show the highest and lowest values within 1.5 box lengths from either end of the box and the circles represent outliers. Kruskall-Wallis testing showed that the median CV differed significantly between the three frailty groups (P < 0.05).
Bollwein et al. Nutrition Journal 2013 12:109 doi:10.1186/1475-2891-12-109