Agreement between theoretical and post-illness weight, analysed with a Bland-Altman plot, n = 111.

<p>M: mean, SD: Standard Deviation. Mean difference, which is the best guess as to the “correct” result. 95% limits of agreement. When the agreement between two measures is high, the mean difference between these two measures is close to 0. The 95% limits of agreement permit visual judgement of how well two methods of measurement agree. The smaller the range between these two limits the better the agreement is.