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Baseline Patient Characteristics
| Attribute | Result |
| Sex | |
| Female | 45 |
| Male | 5 |
| Age (years) | |
| Average (SD) | 39 (12.4) |
| Minimum | 18 |
| Maximum | 59 |
| BMI (kg/m2) | |
| Average (SD) | 27.0 (3.6) |
| Minimum | 20.4 |
| Maximum | 34.1 |
| Indication for surgery | |
| Gallbladder Stones | 43 |
| Gallbladder Polyps | 7 |
| Ultrasound assessments | |
| Gallbladder thickness (mm)—average, SD | 1.8 (0.5) |
| Abdominal wall thickness (cm) | |
| Average (SD) | 2.6 (0.6) |
| Minimum | 1.8 |
| Maximum | 4.6 |
BMI indicates body mass index; SD, standard deviation.
