Table 3

Quality of reporting of abstracts at BURNS annual meeting 2000 and 2008 according to the Timmer instrument for randomized-control trials

Timmer instrument for RCTs

2000

2008


oral

poster

oral

Poster


N

%

n

%

n

%

n

%


Question/objective sufficiently described?

5

56

4

100

7

100

2

100


Design evident and appropriate to answer study question?

8

89

3

75

6

86

2

100


Subject characteristics sufficiently described?

7

78

0

0

5

71

2

100


Subjects appropriate to the study question?

7

78

3

75

6

86

1

50


Controls used and appropriate? (if no control, check no)

9

100

4

100

7

100

2

100


Method of subject selection described and appropriate?

0

0

0

0

2

29

0

0


If random allocation to treatment groups was possible, is it described? (if not possible, check n/a)

0

0

1

25

1

14

0

0


If blinding of investigators to intervention was possible, is it reported? (If not possible, n/a)

0

0

0

0

1

14

0

0


If blinding of subjects to intervention was possible, is it reported? (If not possible, n/a)1

2

22

0

0

3

43

0

0


Outcome measure well defined and robust to measurement bias? Means of assessment reported?

7

78

4

100

5

71

2

100


Confounding accounted for?

0

0

0

0

0

0

0

0


Sample size adequate?

0

0

0

0

0

0

0

0


Post hoc power calculations or confidence intervals reported for statistically non significant results?

0

0

0

0

0

0

0

0


Statistical analyses appropriate?

2

22

1

25

3

43

1

50


Statistical tests stated?

0

0

1

25

1

14

1

50


Exact p-values or confidence intervals stated?

7

78

2

50

7

100

2

100


Attrition of subjects and reason for attrition recorded?

0

0

0

0

0

0

0

0


Results reported in sufficient detail?

7

78

3

75

7

100

2

100


Do the results support the conclusions?

9

100

4

100

7

100

2

100


Sum (items 1-19)


Knobloch et al. BMC Medical Research Methodology 2011 11:161   doi:10.1186/1471-2288-11-161

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