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Table 1 Numbers of trials by number of participants and trial design (RCT or Non-RCT)

From: How Can the Evidence from Global Large-scale Clinical Trials for Cardiovascular Diseases be Improved?

Number of participants Number of trials Proportion of RCT (%)
  RCT Non-RCT Total  
≥100,000 0 2 2 (0.6%) 0
30,000-99,999 2 4 6 (1.7%) 33.3
10,000-29,999 37 5 42 (12.2%) 88.1
3,000-9,999 56 12 68 (19.8%) 82.4
1,000-2,999 72 33 105 (30.5%) 68.6
< 999 76 45 121 (35.1%) 62.8
Total 243 101 344 (100%) 70.6
  1. RCT: randomized controlled trial; Non-RCT: non-randomized controlled trial