Table 1 |
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|
Number of abstracts in each subcategory in a randomly selected corpus of 455 RCT abstracts. |
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|
Classes |
Total |
R1 |
R2 |
R3 |
N1 |
N2 |
N3 |
|
|
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|
Single RCT |
Complex RCT |
RCT substudy |
RCT protocol or announcement |
Systematic review |
Other study |
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|
|
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|
N (%) |
455 |
336 (73.8%) |
21 (4.6%) |
34 (7.5%) |
5 (1.1%) |
6 (1.3%) |
53 (11.6%) |
|
|
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|
Chung and Coiera BMC Medical Informatics and Decision Making 2008 8:48 doi:10.1186/1472-6947-8-48 |
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