The effectiveness of mindfulness-based interventions for ruminative thinking: A systematic review and meta-analysis of randomized controlled trials

•This meta-analysis confirmed the feasibility of mindfulness-based interventions in improving ruminative thinking.•The effectiveness of mindfulness-based interventions was not significant compared to CBT.•The two subgroups with a higher proportion of females showed a more significant improvement in ruminative thinking.•There were no significant differences in participant characteristics, age, and the duration of intervention.