Table 1 Baseline patient characteristics. The number of cases, age, sex and affected body part of the patients in the articles included are shown. The cases are arranged into the groups all cases, individual cases from case reports and series, and patient cohort cases

Cases

978

105

873

Age

Mean: 41 years^a

Mean: 42 years

Mean: 41 years^a

Median: 42 years

Sex

Female: 169 (17%)

Female: 11 (10%)

Female: 158 (18%)

Male: 760 (78%)

Male: 72 (69%)

Male: 688 (79%)

Not specified: 49 (5%)

Not specified: 22 (21%)

Not specified: 27 (3%)

Affected body part(s)

Upper extremities: 209 (21%)

Upper extremities: 42 (40%)

Upper extremities: 167 (19%)

Lower extremities: 204 (21%)

Lower extremities: 53 (50%)

Lower extremities: 151 (17%)

Upper and lower extremities: 193 (20%)

Upper and lower extremities: 8 (8%)

Upper and lower extremities: 185 (21%)

Not specified: 372 (38%)

Not specified: 2 (2%)

Not specified: 370 (43%)