Table 1.
Preoperative general data of AR group and non-AR group.
| Variables | AR group (41 cases) | Non-AR group (41 cases) | T (χ 2) value | P |
|---|---|---|---|---|
| Age, years, mean±SD | 61.05±12.12 | 61.71±10.41 | −0.264 | 0.792 |
| Sex, n (%) | 1.892 | 0.169 | ||
| Male | 23 (56.1) | 29 (70.7) | ||
| Female | 18 (43.9) | 12 (29.3) | ||
| Preoperative biliary drainage n (%) | 13 (31.7) | 6 (14.6) | 3.357 | 0.067 |
| Diabetes, n (%) | 10 (24.4) | 9 (22.0) | 0.069 | 0.794 |
| Hemoglobin, g/l, mean±SD | 118.22±15.46 | 117.37±17.93 | 0.121 | 0.231 |
| White blood cell, G/l, mean±SD | 6.55±3.66 | 7.51±2.13 | −1.452 | 0.150 |
| Total bilirubin, umol/l, mean±SD | 60.68±72.81 | 114.99±148.90 | 1.164 | 0.244 |
| Direct bilirubin, umol/l, mean±SD | 45.69±96.79 | 96.79±132.86 | 1.266 | 0.205 |
| Serum amylase, IU/l, mean±SD | 128.97±156.64 | 104.05±66.35 | 0.833 | 0.405 |
| Serum lipase, IU/l, mean±SD | 212.76±356.04 | 171.19±189.03 | 0.563 | 0.576 |
| Lesion location, n (%) | 10.254 | 0.017* | ||
| Distal bile duct | 5 (12.2) | 15 (36.6) | ||
| Head of pancreas | 23 (56.1) | 13 (31.7) | ||
| Ampulla | 5 (12.2) | 9 (22.0) | ||
| Duodenum | 8 (19.5) | 4 (9.8) | ||
| Size of lesion, mm, mean±SD | 26.50±14.108 | 24.57±19.496 | 0.505 | 0.615 |
| Diameter of pancreatic duct, mm, mean±SD | 4.77±3.44 | 4.34±3.43 | −0.446 | 0.656 |
| Diameter of bile duct, mm, mean±SD | 10.74±6.80 | 10.05±7.24 | −0.268 | 0.713 |
*
Statistically significant.
AR, Augmented reality.