Figure 3
![Figure 3](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1471-2288-13-38/MediaObjects/12874_2012_Article_903_Fig3_HTML.jpg)
Bland Altman plot for self-reported and measured body mass index (in kg/m 2 ) in informed and uniformed general practice patients. Middle line represents mean difference of methods. Lines above and below represent 95% limits of agreements (LOA), where upper LOA is +1.96 SD and lower line is −1.96 SD from overall mean differences.