Table 2.
Variables associated with journal impact factora where articles were published.
| Variables | (n) | β | p value |
|---|---|---|---|
| Financial support | |||
| Noneb | (91) | Ref. | |
| National | (124) | 1.21 | 0.10 |
| International | (194) | 2.01 | 0.00 |
| Study Design | |||
| Retrospectivec | (312) | Ref. | |
| Prospectived | (97) | 1.34 | 0.00 |
| Health effects | |||
| No | (172) | Ref. | |
| Yes | (237) | 1.33 | 0.00 |
a Log-transformed.
b Authors did not report any financial support.
c Ecological, Cross-sectional, retrospective panel, case-control, retrospective cohort.
d Prospective panel, case–cohort, nested case-control, prospective cohort, randomized and non-randomized trials.