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Table 1 Numbers of participants involved in large-scale clinical trials to which questionnaires were sent, and number of participants involved in trials that responded

From: Funding and infrastructure among large-scale clinical trials examining cardiovascular diseases in Japan: evidence from a questionnaire survey

Number of participants in clinical trial

Responded trial*

n (%)

Not-responded trial*

n (%)

Total †

n (%)

< 999

24 (38.1%)

28 (50.0%)

52 (43.7%)

1,000 - 2,999

19 (30.2%)

14 (25.0%)

33 (27.7%)

3,000 - 9,999

15 (23.8%)

7 (12.5%)

22 (18.5%)

≥ 10,000 -

3 (4.8%)

6 (10.7%)

9 (7.6%)

Unknown or no target number

2 (3.2%)

1 (1.8%)

3 (2.5%)

Total

63 (100%)

56 (100%)

119 (100%)

  1. * Proportions (%) in all responding trials (63 trials) or all not-responded trials (56 trials) are shown.
  2. † Proportions (%) in all trials (119 trials) are shown.