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Table 3 Barriers when seeking regulatory data for use in a Cochrane review

From: The use of clinical study reports to enhance the quality of systematic reviews: a survey of systematic review authors

Ā 

Requested/used regulatory data

Considered regulatory data

Not considered regulatory data

Survey question

Total no. of responses: n (% of total responses)

Are there any barriers to using regulatory data?

nā€‰=ā€‰20

nā€‰=ā€‰7

nā€‰=ā€‰133

ā€ƒYes

14 (70)

6 (86)

67 (50)

ā€ƒNo

2 (10)

0 (0)

10 (8)

ā€ƒUnsure

4 (20)

1 (14)

56 (42)

What were these barriers?

nā€‰=ā€‰14

nā€‰=ā€‰5

nā€‰=ā€‰60

ā€ƒRestricted and limited sharing of data

8

4

31

ā€ƒTime-constraints

6

2

17

ā€ƒLack of experience (inc. statistical)

4

1

21

ā€ƒIdentifying/searching for trials

2

1

13

ā€ƒQuality of data

1

0

12

ā€ƒCost

0

1

1

ā€ƒEffort/resources required

0

0

5

ā€ƒLimited access for peer reviewers*

0

0

1

  1. *This referred to peer reviewers not having access to regulatory data during the peer review stage