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Table 6 Planned and true power of trials

From: A reinvestigation of recruitment to randomised, controlled, multicenter trials: a review of trials funded by two UK funding agencies

 

Planned power

80%to 89%

90%+

Missing

 

N

n (%)

N

n (%)

N

True power

39

 

28

 

6

90%+

 

2 (7)

 

10 (53)

 

80% to 89%

 

12 (43)

 

4 (21)

 

<80%

 

14 (50)

 

5 (26)

 

Missing

 

11

 

9

 

Final recruitment

39

 

28

 

6

≥100%

 

22 (56)

 

16 (57)

 

≥80% but less than 100%

 

6 (15)

 

9 (32)

 

<80%

 

11 (28)

 

3 (11)

 
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Trials

ISSN: 1745-6215