Effects of mindfulness meditation on trait mindfulness, perceived stress, emotion regulation, and quality of life in hemodialysis patients: A randomized controlled trial.

Convenience sampling from one hospital dialysis centre limits generalisability. The trial followed patients only to the end of the five-week programme, so long-term benefit was not tested. The groups were not equivalent at baseline: the mindfulness group had lower trait mindfulness and lower kidney-disease quality of life, and employment status differed. Randomisation reporting is inconsistent: the methods say 42 per group, while the analysed tables show 37 per group. The paper reports blinding only for the measuring assistant. The control condition was eyes-closed rest, not a matched mindfulness attention control. All outcomes were self-reported questionnaires. The paper contradicts itself on perceived stress in the mindfulness group: the text says the within-group effect was not significant, while Table 2 reports P = 0.030. Both groups were recruited from the same dialysis centre, so contamination cannot be ruled out.

The study was funded by Jordan University of Science and Technology, Deanship of Research. The authors declared no actual or potential conflict of interest.

Do not conclude that mindfulness reliably lowers perceived stress in hemodialysis patients. The paper is internally inconsistent: the text says the within-group change in the mindfulness group was not significant, while the table reports a significant change.