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Table 1 Application characteristics

From: The use of systematic reviews in the planning, design and conduct of randomised trials: a retrospective cohort of NIHR HTA funded trials

  Number of trials
  (n=48), n (%)
Type of trial Parallel 42 (87.5)
  Cluster 5 (10.4)
  Factorial 1 (2.1)
Nature Superiority 37 (77.1)
  Non-inferiority 7 (14.6)
  Equivalence 4 (8.3)
Number of Primary Outcomes 1 35 (72.9)
2 9 (18.8)
  3 3 (6.3)
4 1 (2.1)
Number of trial arms 2 37 (77.1)
  3 9 (18.8)
  4 2 (4.2)
Median Sample size (range) 583 (172 to 20,000)