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. 2022 Apr 23;38(1):227–236. doi: 10.1007/s00467-022-05553-x

Table 1.

Number of studies, publication rate and number of patients in completed studies on pediatric dialysis registered at ClinicalTrials.gov

Characteristic Number of studies Results available
(% of number of studies)
Peer-reviewed results
(% of number of studies)
Patient number enrolled Patient number enrolled in studies with available results
(% of patient number enrolled)
All studies 53 28 (52.8) 19 (35.8) 7287 4025 (55.2)
Pediatric studies, n (% of 53) 12 (22.6) 9 (75.0) 6 (50.0) 616 542 (87.9)
Research topics (% of 53)
  Medication and control of secondary complications 26 (49.1) 13 (50.0) 7 (26.9) 2869 1324 (46.1)
  Dialysis technique and dialysis efficiency 20 (37.7) 11 (55.0) 8 (40.0) 1965 639 (32.5)
  Others 7 (13.2) 4 (57.1) 4 (57.1) 2453 2062 (84.1)
Study design, n (% of 53)
  Randomized controlled trials 14 (26.4) 9 (64.3) 8 (57.1) 621 398 (64.1)
  Non-randomized interventional trials 18 (33.9) 12 (66.7) 7 (38.9) 1376 1155 (83.9)
  Observational studies 21 (39.6) 7 (33.3) 4 (19.0) 5290 2472 (46.7)
Type of funding, n (% of 53)
  Co-funded by industry 25 (47.1) 15 (60.0) 9 (36.0) 4725 3474 (73.5)
  Funded by academia 28 (52.8) 13 (46.4) 10 (35.7) 2562 551 (21.5)