|
Reporting characteristics of the study design for 315 randomly selected HuGE articles (2001–2003) |
||
| Reporting characteristic |
Count |
Percent |
|
|
||
| Number of study participants |
||
| < 100 |
49 |
15.6 |
| 100–499 |
190 |
60.3 |
| 500–999 |
47 |
14.9 |
| >= 1000 |
29 |
9.2 |
| Reported the available power of the study |
||
| No |
275 |
87.3 |
| Yes |
40 |
12.7 |
| Reported that multiple study populations or case or control groups were used |
||
| No |
235 |
74.6 |
| Yes |
80 |
25.4 |
| Provided any information on the origin of the study participants |
||
| No |
38 |
12.1 |
| Yes |
277 |
87.9 |
| Provided any information on the enrollment criteria for the study participants |
||
| No |
8 |
2.5 |
| Yes |
307 |
97.5 |
| Sex distribution reported for all study participants |
||
| No |
84 |
26.7 |
| Yes |
231 |
73.3 |
| Mean or median age reported for all study participants |
||
| No |
109 |
34.6 |
| Yes |
206 |
65.4 |
| Standard deviation or interquartile range reported for all study participants |
||
| No |
143 |
45.4 |
| Yes |
172 |
54.6 |
| Explicitly stated the use of unrelated study participants |
||
| No |
259 |
82.2 |
| Yes |
56 |
17.8 |
| Potential for outcome misclassification |
||
| No |
272 |
86.3 |
| Unclear |
6 |
1.9 |
| Yes |
37 |
11.8 |
Yesupriya et al. BMC Medical Research Methodology 2008 8:31 doi:10.1186/1471-2288-8-31 |
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