Fig. 2.

Risk of bias summary. Footnotes: blinding of the patients could not be done due to the nature of the intervention and outcome. The selective reporting category judges the evidence of incomplete reporting of outcomes, time points, subgroups or analyses. Treatment adherence measures whether the prescribed therapy sessions were completed as planned. Quality of MLD categorises the risk of bias due to an incorrect/insufficient MLD intervention (e.g. when applied by unskilled therapists). MLD manual lymphatic drainage; HRQoL health-related quality of life