Table 4.
R2 values after adjustment in multiple regression analysisa
| Factors adjusted for in multiple regression | R2 values |
|---|---|
| Journal impact factor |
0.592 |
| Journal impact factor and intervention type |
0.806 |
| Journal impact factor and country location of first author |
0.763 |
| Journal impact factor and number of authors |
0.759 |
| Journal impact factor and ICD-10 code |
0.692 |
| Journal impact factor and international collaboration | 0.619 |
aICD-10, International Statistical Classification of Diseases and Related Health Problems, 10th Revision.