“…35,41,52 Two studies defined pain at the withdrawal of dialysis, or in the last 24 hours of life following the withdrawal of dialysis. 19,33 Other definitions of chronic pain ranged from pain in the past 24 hours in 1 study, 67 a duration of pain of 3 days in 1 study, 74 7 days in 20 studies, 3,7,14,28,30,32,34,44,47,48,59,60,62,63,70,71,75,76,78,79 2 weeks in 1 study, 50 4 weeks in 12 studies, 8,25-27,37,49,65,68,69,72,77,84 6 weeks in 1 study, 56 3 months in 11 studies, 29,31,36,38-40,42,45,64,73,83 and “lasting weeks, months, or even years” in 1 study. 57 Fifteen studies did not specify a duration, despite the intent to understand chronic pain burden.…”