Figure 1From: Validity of self-measured waist circumference in adults at risk of type 2 diabetes and cardiovascular disease Bland-Altman plot of the difference between self-measured and objectively measured waist circumference plotted against the mean. The solid line represents the mean difference between the objectively and self-measured waist circumference (5.98 cm), and the dashed lines represent the 95% confidence interval for agreement (15.42 to -3.46).Back to article page