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Table 1 Characteristics of included trials

From: Are investigators’ access to trial data and rights to publish restricted and are potential trial participants informed about this? A comparison of trial protocols and informed consent materials

 

Total (n = 42)

Partially industry sponsored (n = 10)

Fully industry sponsored (n = 32)

Type of trial

 Multi-centre

39 trials (93%)

9 trials (90%)

30 trials (94%)

 Single centre

3 trials (7%)

1 trial (10%)

2 trials (6%)

Planned sample size

 Median

576 participants

275 participants

641 participants

 Interquartile range

361–1130 participants

172–781 participants

407–1217 participants

Type of intervention examined

Drug

29 trials (69%)

2 trials (20%)

27 trials (84%)

 Device

6 trials (14%)

2 trials (20%)

4 trials (13%)

 Surgery

1 trial (2%)

0 trials (0%)

1 trial (3%)

 Other

6 trials (14%)

6 trials (60%)

0 trials (0%)