| Number of |  | Number of | ||
---|---|---|---|---|---|
Condition | Trials | Patients | Drug treaments | Trial arms | Contributing patients |
Arthritis | 16 | 2990 | Opioid | 24 | 2173 |
 |  |  | Placebo | 7 | 445 |
 |  |  | Other comparator | 2 | 447 |
Musculoskeletal | 10 | 1648 | Opioid | 18 | 1561 |
 |  |  | Placebo | 4 | 302 |
 |  |  | Other comparator | 0 | 0 |
Neuropathic | 5 | 302 | Opioid | 5 | 219 |
 |  |  | Placebo | 4 | 178 |
 |  |  | Other comparator | 1 | 46 |
Mixed conditions | 3 | 606 | Opioid | 6 | 606 |
 |  |  | Placebo | 1 | 49 |
 |  |  | Other comparator | 0 | 0 |