Table 1 |
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|
Number of reviews by type of intervention |
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|
Year of publication |
Type of intervention |
Total number of reviews |
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|
|
||||||
|
Drug |
Surgical/dental |
Physical |
Diagnostic/screening |
Other |
||
|
|
||||||
|
1994 |
5 |
0 |
0 |
0 |
0 |
5 |
|
1995 |
9 |
0 |
0 |
0 |
3 |
12 |
|
1996 |
9 |
6 |
2 |
0 |
5 |
21 |
|
1997 |
15 |
2 |
1 |
0 |
6 |
29 |
|
1998 |
18 |
2 |
0 |
0 |
4 |
23 |
|
1999 |
21 |
1 |
0 |
1 |
4 |
27 |
|
2000 |
13 |
2 |
1 |
0 |
2 |
17 |
|
2001 |
17 |
1 |
2 |
0 |
9 |
27 |
|
2002 |
19 |
7 |
3 |
0 |
11 |
40 |
|
2003 |
26 |
1 |
3 |
0 |
14 |
44 |
|
2004 |
12 |
1 |
1 |
0 |
3 |
17 |
|
Jan-Apr 2005 |
0 |
0 |
0 |
0 |
0 |
0 |
|
Total |
164 |
20 |
13 |
1 |
56 |
256 |
|
|
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|
The sum of reviews by intervention is greater than the total number of reviews because 5 reviews examined 2 (4 reviews) or 3 (1 review) types of intervention (e.g. drug and non-drug antihypertensive therapy) |
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|
Golder et al. BMC Medical Research Methodology 2006 6:3 doi:10.1186/1471-2288-6-3 |
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