Table 2

Distribution of Pair-wise Interventions in meta-analyses in the CDSR

Second Intervention


First Intervention

vs. Control

vs. Placebo

vs. Pharm

Vs. Non-Pharm1 from same category

vs. Non-Pharm1 from different category

Total


Pharmacological

4027 (18%)

4321 (19%)

5571 (25%)

n/a

186 (<1%)

14105 (63%)

Vaccines

95 (<1%)

113 (<1%)

0 (0%)

49 (<1%)

0 (0%)

257 (1%)

Surgical

241 (1%)

2 (<1%)

29 (<1%)

1204 (5%)

86 (<1%)

1562 (7%)

Medical devices

706 (3%)

50 (<1%)

82 (<1%)

941 (4%)

159 (<1%)

1938 (9%)

Cellular and gene

29 (<1%)

6 (<1%)

0 (0%)

57 (<1%)

7 (<1%)

99 (<1%)

Radiotherapy

124 (<1%)

65 (<1%)

3 (<1%)

56 (<1%)

63 (<1%)

311 (1%)

Physical

318 (1%)

10 (<1%)

8 (<1%)

72 (<1%)

39 (<1%)

447 (2%)

Educational

303 (1%)

4 (<1%)

1 (<1%)

34 (<1%)

27 (<1%)

369 (2%)

Behavioural

380 (2%)

7 (<1%)

3 (<1%)

165 (<1%)

14 (<1%)

569 (3%)

Screening

17 (<1%)

0 (0%)

0 (0%)

0 (0%)

0 (0%)

17 (<1%)

Complementary

216 (1%)

104 (<1%)

41 (<1%)

8 (<1%)

19 (<1%)

388 (2%)

Psychological

379 (2%)

1 (<1%)

6 (<1%)

116 (<1%)

44 (<1%)

546 (2%)

Resources and infrastructure

506 (2%)

0 (0%)

14 (<1%)

52 (<1%)

33 (<1%)

605 (3%)

Complex

505 (2%)

36 (<1%)

43 (<1%)

200 (<1%)

154 (<1%)

938 (4%)

Other

188 (1%)

44 (<1%)

8 (<1%)

51 (<1%)

11 (<1%)

302 (1%)


Total

8034 (36%)

4763 (21%)

5809 (26%)

3005 (13%)

842 (4%)

22453


1Non-Pharm = all intervention categories as listed for the First intervention, other than Pharmacological

n/a = not applicable

Davey et al. BMC Medical Research Methodology 2011 11:160   doi:10.1186/1471-2288-11-160

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