Characteristics of core outcome sets included in analysis
| Characteristic | No (%) of core outcome sets (n=38) |
| Year of publication | |
| 2015 | 6 (16) |
| 2016 | 3 (8) |
| 2017 | 12 (32) |
| 2018 | 9 (24) |
| 2019 | 8 (21) |
| Topic area | |
| Neurology | 7 (18) |
| Cancer | 5 (13) |
| Gastroenterology | 5 (13) |
| Pain | 4 (11) |
| Diabetes | 3 (8) |
| Rheumatoid arthritis | 2 (5) |
| Allergy or infections | 2 (5) |
| Other | 10 (26) |
| Type of intervention targeted | |
| Any | 31 (82) |
| Drugs | 4 (11) |
| Devices/surgeries | 2 (5) |
| Gene therapy | 1 (3) |
| No of outcomes per core outcome set | |
| Median | 8 |
| Interquartile range | 6-11 |
| Range | 2-38 |
| Mean | 10.0 |
| Standard deviation | 4.1 |