Proportion (n, %) of articles with and without patient research partner involvement
| Articles with patient research partner involvement (n=11, %) | Articles with no patient research partner involvement (n=611, %) | |
| Geographical region | ||
| North America (n=228) | 1, 0.4 | 227, 99.6 |
| Europe (n=282) | 10, 3.5 | 272, 96.5 |
| Other (n=112) | 0, 0 | 112, 100 |
| Funding source | ||
| Not industry-funded (n=237) | 8, 3.4 | 229, 96.6 |
| Industry funded/investigator initiated (n=101) | 3, 3.0 | 98, 97.0 |
| Industry funded/industry initiated (n=284) | 0, 0 | 284, 100 |
| Intervention | ||
| Pharmacological (n=504) | 6, 1.2 | 498, 98.8 |
| Non-pharmacological (n=118) | 5, 4.2 | 113, 95.8 |
| Disease category | ||
| Ankylosing spondylitis (n=43) | 0, 0 | 43, 100 |
| Crystal arthritis (n=28) | 1, 4 | 27, 96 |
| Osteoarthritis (n=113) | 3, 2.7 | 110, 97.3 |
| Miscellaneous rheumatic disease (n=14) | 0, 0 | 14, 100 |
| Paediatric rheumatology (n=15) | 0, 0 | 15, 100 |
| Pain syndromes (n=18) | 0, 0 | 18, 100 |
| Psoriatic arthritis (n=60) | 0, 0 | 60, 100 |
| Rheumatoid arthritis (n=231) | 5, 2.2 | 226, 97.8 |
| Systemic lupus erythematous (n=36) | 0, 0 | 36, 100 |
| Systemic sclerosis/scleroderma (n=24) | 1, 4 | 23, 96 |
| Vasculitis (n=18) | 0, 0 | 18, 100 |
| Not disease specific (n=12) | 1, 8 | 11, 92 |
| Other connective tissue diseases (n=10) | 0, 0 | 10, 100 |
| Journal (2019 Impact factor) | ||
| Annals of the Rheumatic Disease (16.102) (n=154) | 5, 3.2 | 149, 96.8 |
| Arthritis and Rheumatology (9.586) (n=83) | 0, 0 | 83, 100 |
| Rheumatology (5.606) (n=55) | 1, 2 | 54, 98 |
| Seminars in Arthritis and Rheumatism (4.751) (n=8) | 0, 0 | 8, 100 |
| Osteoarthritis and Cartilage (4.793) (n=49) | 2, 4 | 47, 96 |
| Arthritis Research and Therapy (4.103) (n=79) | 0, 0 | 79, 100 |
| Arthritis Care and Research (4.056) (n=69) | 2, 3 | 67, 97 |
| Joint Bone Spine (3.741) (n=7) | 1, 14 | 6, 86 |
| Journal of Rheumatology (3.350) (n=47) | 0, 0 | 47, 100 |
| New England Journal of Medicine (74.699) (n=11) | 0, 0 | 11, 100 |
| The Lancet (60.392) (n=32) | 0, 0 | 32, 100 |
| Journal of the American Medical Association (45.540) (n=10) | 0, 0 | 10, 100 |
| The British Medical Journal (30.223) (n=1) | 0, 0 | 1, 100 |
| Annals of Internal Medicine (21.317) (n=13) | 0, 0 | 13, 100 |
| JAMA Internal Medicine (18.652) (n=4) | 0, 0 | 4, 100 |
| Year of publication | ||
| 2016 (n=124) | 1, 0.8 | 123, 99.2 |
| 2017 (n=132) | 2, 1.5 | 130, 98.5 |
| 2018 (n=144) | 2, 1.4 | 142, 98.6 |
| 2019 (n=117) | 0, 0 | 117, 100 |
| 2020 (n=105) | 6, 5.7 | 99, 94.3 |