Unadjusted predictors of recommendation for multidisciplinary discussion, surgical lung biopsy and bronchoscopy
| Predictor variables | Multidisciplinary discussion | Surgical lung biopsy | Bronchoscopy | |||
| OR (95% CI) | p-value | OR (95% CI) | p-value | OR (95% CI) | p-value | |
| NA versus European corresponding author# | 1.09 (0.60–1.97) | 0.79 | 1.84 (1.09–3.11) | 0.02 | 0.51 (0.26–1.02) | 0.06 |
| Year of publication#,¶ | 1.01 (0.95–1.09) | 0.67 | 0.86 (0.81–0.92) | <0.001 | 0.92 (0.86–0.99) | 0.04 |
| MD versus other degree for corresponding author | 1.37 (0.45–4.18) | 0.58 | 2.28 (0.82–6.34) | 0.11 | 0.63 (0.22–1.80) | 0.39 |
| Conflict of interest reported | 0.82 (0.47–1.42) | 0.47 | 0.46 (0.28–0.75) | 0.002 | 0.69 (0.36–1.30) | 0.25 |
| Funding sources reported | 1.22 (0.65–2.31) | 0.53 | 0.87 (0.49–1.52) | 0.62 | 1.39 (0.68–2.82) | 0.37 |
| Number of IPF publications by corresponding author | 1.01 (0.98–1.04) | 0.59 | 0.96 (0.93–0.99) | 0.02 | 0.97 (0.92–1.02) | 0.18 |
| Respiratory journal | 0.94 (0.53–1.67) | 0.85 | 1.03 (0.63–1.68) | 0.91 | 1.13 (0.58–2.20) | 0.71 |
| Journal impact factor, available | 0.88 (0.50–1.55) | 0.65 | 1.21 (0.73–1.98) | 0.46 | 0.55 (0.29–1.04) | 0.07 |
| Journal impact factor, raw value | 1.00 (0.92–1.08) | 0.99 | 0.96 (0.88–1.04) | 0.29 | 0.93 (0.79–1.11) | 0.43 |
| Cited contemporary guideline | 1.65 (0.83–3.30) | 0.15 | 0.86 (0.50–1.47) | 0.58 | 1.08 (0.52–2.26) | 0.84 |
| DISCERN score+ | 1.00 (0.95–1.05) | 0.94 | 0.98 (0.95–1.02) | 0.34 | 0.97 (0.92–1.03) | 0.30 |
NA: North American; MD: medical doctor; IPF: idiopathic pulmonary fibrosis. #: independent predictors of recommendation for bronchoscopy; ¶: independent predictor of recommendation for surgical lung biopsy; +: per 10-unit change in DISCERN score.