The effects of aromatherapy massage on improvement of anxiety among patients receiving palliative care A systematic review of randomized controlled trials

Background: Anxiety in patients receiving palliative care is a noteworthy concern because it may affect their quality of life. Aromatherapy has been widely utilized to improve anxiety among patients receiving palliative care. Objective: To investigate the effectiveness of anxiety improvement in patients receiving palliative care by comparing the intervention group (aromatherapy massage) with the control group (common massage alone). Methods: A literature search was performed using PubMed, Cochrane Library, Embase, MEDLINE, and CINAHL for all related studies from inception through November 30, 2018 without restriction on language. A quantitative synthesis of randomized controlled trials (RCTs) was conducted to compare the difference in effectiveness scores between the aromatherapy massage and only common massage groups by employing a random-effect model. Results: We included three RCTs with a total of 160 participants (81 in the intervention group and 79 in the control group) in our systematic review and conducted a quantitative synthesis. The secondary data from the reviewed trials were then pooled using a random-effect model. Anxiety (mean difference = -2.60 [95% confidence interval: -7.82, 2.63], P=.33) was assessed using anxiety scores from the State-Trait Anxiety Inventory. Conclusion: Compared with common massage alone, aromatherapy massage does not provide significant effectiveness of anxiety improvement among patients receiving palliative care.