Table 1 Characteristics of the index VOC visits
|  |  | Total visits (n = 120) |
|---|---|---|
Age (years) | Median (IQR) | 28 (22–34.75) |
Range | 14–50 | |
Gender | Male | 70 (58.3%) |
Female | 50 (41.7%) | |
Comorbidities | No Comorbidities | 71 (59.2%) |
Biliary disease | 46 (38.3%) | |
Diabetes mellitus II | 3 (2.5%) | |
History of transfusion exchange | Yes | 52 (43.3%) |
Compliant on hydroxyurea | Yes | 50 (41.7%) |
No | 61 (50.8%) | |
Not on hydroxyurea | 9 (7.5%) | |
Opioid administration | Yes | 109 (90.8%) |