Enhanced cognitive behaviour therapy (CBT-E) for severe and extreme anorexia nervosa in an outpatient eating disorder unit at a public hospital: a quality-assessment study

Table 2 BMI of completers and non-completers

	Completers	SD	p	Cohen’s f	Non-completers	SD	p	Cohen’s f
Start of treatment	14.9	1.2			14.6	1.1
End of treatment	19.4	1.2	0.002	0.63	16.5	2.5	0.019	0.51
Follow-up	19.2	1.6	0.594		18.0	3.4	0.575

BMI, mean and standard deviation (SD), at start of treatment, end of treatment and follow-up. Wilcoxon rank sum test was used for comparison of BMI at start of treatment with BMI at end of treatment and for comparison of BMI at end of treatment with BMI at follow-up, p < 0.05 was regarded as statistical significant. Cohen’s f > 0.4 was regarded as a large effect