Fig. 1

Dialysis symptom frequency scores using a visual analogue scale of 0 to 10. Patients divided into those who suffered symptomatic intra-dialytic hypotension requiring nursing intervention and those who had dialysis sessions without any intervention.
Results expressed as median, interquartile and 95% limits. *p < 0.05, **p < 0.01, ***p < 0.001 vs those with no interventions