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|
Effect
|
AOR
|
95% CI
|
|---|
|
Number of PIs
| | | |
|
Multiple vs. single
|
2.04**
|
1.32
|
3.14
|
|
Size of collaboration
| | | |
|
3 + institutions vs. single
|
4.78***
|
2.99
|
7.63
|
|
2 institutions vs. single
|
1.71**
|
1.16
|
2.53
|
|
Study location
| | | |
|
3 + locations vs. 1 location
|
1.86**
|
1.18
|
2.92
|
|
2 + locations vs. 1 location
|
1.58
|
0.89
|
2.81
|
|
Study size
| | | |
|
Large vs. small
|
1.97*
|
1.16
|
3.34
|
|
Medium vs. small
|
0.96
|
0.59
|
1.56
|
|
Funding Source
| | | |
|
Federal vs industry only
|
4.45**
|
1.80
|
11.00
|
|
Other vs industry only
|
0.23***
|
0.14
|
0.39
|
|
Study design
| | | |
|
RCTs vs observational
|
1.11
|
0.70
|
1.76
|
|
Gender
| | | |
|
Mixed vs male
|
1.45
|
0.69
|
3.06
|
|
Female vs male
|
5.06**
|
2.05
|
12.49
|
|
Age
| | | |
|
Child vs adult
|
3.13**
|
1.43
|
6.86
|
|
Mixed vs adult
|
2.04**
|
1.19
|
3.50
|
|
Duration of study
| | | |
|
Long vs short
|
1.60
|
0.83
|
3.07
|
|
Medium vs. short
|
1.31
|
0.90
|
1.91
|
- *p < 0.05, ** p < 0.01, *** p < 0.001
