Table 3. Average pre- and post-intervention values for the dialysis adequacy and process measures by intervention status among 41 treatment centers in ESRD Network 6 enrolled in a hemodialysis adequacy quality improvement project, 2001–2002

Outcome/Process MeasureInterventionComparisonPb
PrePostDifferenceaPrePostDifferencea
a The average of each center’s post-minus pre-intervention values.
b Test of the hypothesis that the average pre minus post differences between intervention and comparison centers are not equal.
Mean URR68.170.92.8568.269.10.96*0.002
Mean blood flow (cc/min)398.7413.714.9384.4401.819.40.5
Mean treatment time (min)211.4218.87.4215.1213.3−2.00.03