Table 1.
Clinical data of patients
| Con group (n=196) | Obs group (n=204) | Z/χ2/t | P-value | |
|---|---|---|---|---|
| Age (Y) | 48.47±9.11 | 49.07±8.87 | 0.667 | 0.505 |
| Gender | 0.920 | 0.338 | ||
| Male | 131 (66.84) | 127 (62.25) | ||
| Female | 65 (33.16) | 77 (37.75) | ||
| BMI (kg/m2) | 23.7±3.2 | 24.2±2.4 | 1.772 | 0.077 |
| American Society of Anesthesiologists classification | 2.749 | 0.253 | ||
| I | 42 (21.43) | 31 (15.20) | ||
| II | 149 (76.02) | 166 (81.37) | ||
| III | 5 (2.55) | 7 (3.43) | ||
| Surgery type | 1.531 | 0.216 | ||
| Open surgery | 72 (36.73) | 63 (30.88) | ||
| Laparoscopic surgery | 124 (63.27) | 141 (69.12) | ||
| Surgery mode | 2.347 | 0.799 | ||
| Pneumonectomy | 66 (33.67) | 74 (36.27) | ||
| Esophagectomy | 31 (15.82) | 40 (19.61) | ||
| Gastrectomy | 37 (18.88) | 32 (15.69) | ||
| Esophageal dilation | 20 (10.20) | 19 (9.31) | ||
| Bronchial dilatation | 18 (9.18) | 14 (6.86) | ||
| Others | 24 (12.25) | 25 (12.26) |