|
Distribution and baseline characteristics of sample abstracts |
||||
| CCT |
OCR |
BSS |
Total |
|
|
|
||||
| Total |
326 |
455 |
219 |
1,000 |
| analytical design |
326(100%) |
331(73%) |
174(79%) |
831 (83%) |
| descriptive design |
- |
124 (27%) |
45 (21%) |
169(17%) |
| Country region |
||||
| US/Canada |
88 (27%) |
181 (40%) |
121 (55%) |
390 (39%) |
| NW-Europe/Austr. |
138(42%) |
135 (30%) |
44 (20%) |
317(32%) |
| SE-Europe |
52(16%) |
62 (14%) |
9 (4%) |
123 (13%) |
| other |
48(15%) |
77(17%) |
45 (21%) |
170 (17%) |
| Language |
||||
| no or minor errors |
301 (92%) |
416(91%) |
210(96%) |
927 (93%) |
| major errors |
25 (8%) |
39 (8%) |
9 (4%) |
73 (7%) |
| Median sample size/group |
||||
| subtype 1 |
parallel: 30 |
T & D: 22 |
animal: 6 |
|
| subtype 2 |
cross over: 10 |
epid.: 38 |
other: n/a |
|
| subtype 3 |
physiol: 10 |
|||
| Quality score |
||||
| median |
0.66 |
0.52 |
0.51 |
|
| IQR |
0.62–0.70 |
0.44–0.58 |
0.44–0.57 |
|
| Stat. significancea |
||||
| positive |
140 (43%) |
149 (45%) |
65 (37%) |
354 (42%) |
| negative |
99 (30%) |
41 (12%) |
7 (4%) |
147(18%) |
| equivocal |
87 (27%) |
141 (43%) |
102 (59%) |
330 (40%) |
|
aanalytical studies only | ||||
Timmer et al. BMC Medical Research Methodology 2001 1:13 doi:10.1186/1471-2288-1-13 |
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