Fig. 4From: Determination of knee cartilage volume and surface area in beagle dogs: a pilot studyAnimal bodyweights regressed against knee compartment surface areas. Data are presented from both knees from each animal, where available. The regression equation from a simple linear model of surface area versus bodyweight is given in each panel header, along with the p-value for the gradient. The lighter shaded region shows the 95% prediction interval for this model, illustrating the range of plausible future values under this model; the darker shaded region shows the 95% confidence interval for the regression lineBack to article page