“…Nine studies reported anxiety as an outcome, of which six used the State–Trait Anxiety Inventory (Cho et al, 2008; Chun et al, 2017; de Brito et al, 2019; Koselka et al, 2019; Sin & Lee, 2018b; Song et al, 2019) and two used Hospital Anxiety and Depression Scale (Kim et al, 2015; Pálsdóttir et al, 2020). Data from the seven studies (Cho et al, 2008; Chun et al, 2017; de Brito et al, 2019; Kim et al, 2015; Park et al, 2015; Sin et al, 2018; Song et al, 2019) were included in the meta‐analysis. The pooled SMD was −0.84 (95% CI −1.42, −0.25, p = 0.005), and substantial heterogeneity was observed ( χ 2 = 31.39, p < 0.001, I 2 = 84%).…”