Table 3.
Concordance ORs (95% CIs) for the chance of being cited, all types of articles included, N=110, n=5551
| Crude OR | Adjusted OR* | R2* | |
| Content related | |||
| Type of exposure (conc. vs not) | 10 (5.6 to 18) | 13 (7.1 to 23) | 0.14 |
| Study outcome (conc. vs not, n=1799)† | 2.9 (1.4 to 6.0) | 3.4 (1.6 to 7.1) | 0.06 |
| Publication type (conc. vs not) | 1.1 (0.9 to 1.3) | 0.00 (crude) | |
| Not content related | |||
| Funding source (conc. vs not, n=1475)‡ | 1.3 (0.8 to 1.9) | 1.2 (0.8 to 1.8) | 0.05 |
| Publisher (conc. vs not, n=4971)§ | 0.9 (0.7 to 1.2) | 0.9 (0.7 to 1.2) | 0.08 |
| Author affiliation (conc. vs not) | 0.7 (0.6 to 0.9) | 0.8 (0.7 to 1.0) | 0.08 |
| Author gender (conc. vs not, n=5254)¶ | 1.0 (0.8 to 1.3) | 1.0 (0.8 to 1.3) | 0.08 |
| Author continent (conc. vs not) | 2.0 (1.7 to 2.5) | 2.1 (1.7 to 2.6) | 0.09 |
| Self-citation (yes vs no) | 6.1 (3.8 to 9.7) | 6.1 (3.7 to 9.9) | 0.09 |
*Adjusted for study design of cited publication. Bold odds ratios are statistically significant at p <0.05.
†Publications with mixed results excluded from analysis.
‡Publications without reported funding source excluded from analysis.
§Three main publishers are differentiated: Wiley-Blackwell, BMJ and Elsevier. Either the cited or the citing publication should be in one of these categories to be included in the analysis.
¶Publications with unclear author’s gender excluded from analysis.
N, number of publications; n, number of potential citation paths.