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Table 1 A comparison of invited CTUs response status and four key characteristics

From: Monitoring in practice – How are UK academic clinical trials monitored? A survey

CTU characteristics

Answered survey N (%)

Did not answer survey N (%)

Chi square and p value for answering survey comparison

Those eligible for survey N (%)

Registration status

 Full

39 (91)

6 (86)

0.2

36 (95)

 Provisional

4 (9)

1 (14)

p = 0.7

2 (5)

Cancer trials

 Yes

30 (70)

4 (57)

0.4

28 (74)

 No

13 (30)

3 (43)

p = 0.5

10 (26)

24-hour randomisation

 Yes

38 (88)

4 (57)

4.4

33 (87)

 No

5 (12)

3 (43)

p = 0.04

5 (13)

International trials

 Yes

29 (67)

6 (86)

1.0

25 (66)

 No

14 (33)

1 (14)

p = 0.3

13 (34)

  1. CTU clinical trials unit