Table 5.
Patients' characteristics of elective laparoscopic cholecystectomy: a case-match study
| Human assistant (n = 20) |
Soloassist II (n = 20) |
p | |||||
|---|---|---|---|---|---|---|---|
| mean | SD | range | mean | SD | range | ||
| Age, years | 64.1 | 12.8 | 38–83 | 64.9 | 13.9 | 40–83 | 0.85 |
| Sex, male/female | 10/10 | 10/10 | 0.99 | ||||
| BMI, kg/m2 | 22.4 | 2.1 | 18.4–25.4 | 22.79 | 1.96 | 20.1–26.4 | 0.56 |
| ASA score | |||||||
| 1 | 7 | 9 | |||||
| 2 | 11 | 9 | 0.60 | ||||
| 3 | 2 | 2 | |||||
| Number of doctors | 2.7 | 0.47 | 2–3 | 2.0 | 0.22 | 2–3 | <0.01 |
| Operation duration, min | 90.2 | 22.2 | 42–132 | 67.5 | 21.6 | 42–126 | <0.01 |
| Set-up time, min | 34.7 | 6.6 | 25–45 | 34.4 | 6.7 | 23–45 | 0.87 |
| Bleeding, ml | 10.5 | 12.1 | 5–50 | 8.5 | 11.3 | 5–50 | 0.59 |
| LOHS, days | 5.6 | 1.5 | 3–7 | 3.9 | 1.2 | 2–6 | <0.01 |
Set-up time = Duration between room entry and skin incision; LOHS = postoperative length of hospital stay; SD = standard deviation.