Table 3 Sensitivity analysis: crude and adjusted odds ratios for the chance of being cited, excluding two highly cited publications (> 50 citations)
From: Selective citation in scientific literature on the human health effects of bisphenol A
Variable | Categories | Crude OR | Adjusted OR* |
|---|---|---|---|
Significance | Yes vs no | 1.57 (1.28–1.92) | 1.48 (1.21–1.80) |
Authors’ conclusion | In line vs not in line with hypothesis | 1.45 (1.18–1.77) | 1.53 (1.25–1.87) |
Study design | Narrative review | 1.00 (ref) | |
Cross-sectional study | 4.44 (3.26–6.04) | ||
Case-control study | 2.61 (1.88–3.62) | ||
Cohort study | 3.93 (2.82–5.46) | ||
Systematic review | 3.28 (2.22–4.85) | ||
Sample size** | < 168 | 1.00 (ref) | 1.00 (ref) |
168–430 | 1.03 (0.87–1.21) | 0.98 (0.84–1.16) | |
> 430 | 1.40 (1.09–1.79) | 1.22 (0.97–1.54) | |
Title of publication | Conclusive title vs non-conclusive title | 1.07 (0.91–1.25) | 0.96 (0.82–1.12) |
Number of afilliations** | < 3 | 1.00 (ref) | 1.00 (ref) |
3–5 | 1.46 (1.21–1.77) | 1.06 (0.86–1.30) | |
> 5 | 1.09 (0.86–1.38) | 0.70 (0.55–0.90) | |
Journal impact factor** | < 2.8 | 1.00 (ref) | 1.00 (ref) |
2.8–4.6 | 1.62 (1.41–1.87) | 1.38 (1.19–1.60) | |
> 4.6 | 1.59 (1.33–1.89) | 1.43 (1.20–1.70) | |
Funding source | Not reported vs reported | 0.46 (0.34–0.63) | 0.83 (0.62–1.13) |
Number of references** | < 46 | 1.00 (ref) | 1.00 (ref) |
46–58 | 1.07 (0.92–1.24) | 0.96 (0.82–1.12) | |
> 58 | 0.51 (0.42–0.61) | 0.56 (0.46–0.69) | |
Gender of corresponding author | Male vs female | 1.14 (1.01–1.28) | 1.20 (1.05–1.37) |
Affiliation of corresponding author | Private vs public sector | 1.07 (0.86–1.35) | 1.08 (0.85–1.38) |
Authority of the authors** | < 3 | 1.00 (ref) | 1.00 (ref) |
3–26 | 2.26 (1.85–2.76) | 2.09 (1.68–2.60) | |
> 26 | 2.75 (2.18–3.47) | 2.69 (2.08–3.48) | |
Self-citation | Yes vs no | 5.46 (4.09–7.28) | 5.05 (3.75–6.81) |