Characteristics of patients in publications
| Indication | Age of patients* (median, IQR) | Number of men (median, IQR)† | Number of women (median, IQR)† |
| Oncology | 59 (51–62) | 307 (131–681) | 212 (100–281) |
| HIV/AIDS | 35 (33–36) | 470 (48–487) | 75 (27–125) |
| Other‡ | 37 (27–58) | 110 (36–311) | 51 (20–243) |
| Total | 56 (44–61) | 184 (58–514) | 141 (46–263) |
↵*Excluded: no age given=9 studies, only mean age given=5 studies, not stated if age mean or median=2 studies, median age given for only part of study population=1 study.
†Excluded: women only=4 studies, men only=1 study, sex breakdown not given=3 studies.
‡Central neuropathic pain, clotting disorders, hepatitis C, influenza, Parkinson’s disease, paroxysmal nocturnal haemoglobinuria, stroke.