Description of included articles
| Country of corresponding author | |
| North America | 150 (51%) |
| Europe | 105 (36%) |
| Other | 37 (13%) |
| MD versus other degree for corresponding author | 268 (92%) |
| Conflict of interest | |
| Present | 92 (32%) |
| Absent | 61 (21%) |
| Not reported | 139 (48%) |
| Funding source | |
| Industry | 21 (7%) |
| Non-industry | 41 (15%) |
| None | 5 (2%) |
| Not reported | 225 (76%) |
| Number of IPF publications by corresponding author | 2 (0–8) |
| Journal type | |
| Respiratory | 181 (62%) |
| General internal medicine | 38 (13%) |
| Pharmaceutical science | 35 (12%) |
| Other | 38 (13%) |
| Journal impact factor | 2.8 (2.0–4.0) |
| Primary objective | |
| Diagnosis of IPF | 161 (55%) |
| Management of IPF | 221 (76%) |
| Diagnosis and management of IPF | 90 (31%) |
Data are presented as n (%) or median (interquartile range). MD: medical doctor; IPF: idiopathic pulmonary fibrosis.