Table 1 Demographics and clinical characteristics of the study participants
Variables | Non-ONN group (n = 432) | ONN group (n = 461) | t/χ2 | P value |
|---|---|---|---|---|
Age (year) | 62.65\(\pm\)10.62 | 63.22\(\pm\)11.66 | -0.776 | 0.444 |
Gender (%) | 0.182 | 0.670 | ||
Male | 297(68.8) | 323(70.1) | ||
Female | 135(31.2) | 138(29.9) | ||
Smoking status | 2.166 | 0.337 | ||
Never smoked | 181(41.9) | 201(43.6) | ||
former smoker | 156(36.1) | 146(31.7) | ||
Active smoker | 95(22.0) | 114(24.7) | ||
Family history of GC | 4.647 | 0.031 | ||
Yes | 58(13.4) | 41(8.9) | ||
No | 374(86.6) | 420(91.1) | ||
History of pulmonary disease | ||||
COPD | 42(9.7) | 34(7.4) | 1.578 | 0.231 |
Asthma | 16(3.7) | 22(4.8) | 0.625 | 0.508 |
Pulmonary infection | 28(6.5) | 30(6.5) | 0.000 | 1.000 |
Others | 16(3.7) | 13(2.8) | 0.554 | 0.572 |
Laparoscopic surgery | 29.872 | < 0.001 | ||
Yes | 56(13.0) | 128(27.8) | ||
No | 376(87.0) | 333(72.2) | ||
Critical GC | 0.003 | 0.959 | ||
Yes | 38(8.8) | 41(8.9) | ||
No | 394(91.2) | 420(91.1) | ||
Radiotherapy/chemotherapy before admission | 4.109 | 0.043 | ||
Yes | 42(9.7) | 28(6.1) | ||
No | 390(90.3) | 433(93.9) | ||
Scope of surgery | 7.076 | 0.070 | ||
total gastrectomy | 191(44.2) | 175(38.0) | ||
distal gastrectomy | 189(43.8) | 238(51.6) | ||
proximal gastrectomy | 25(5.8) | 29(6.3) | ||
others | 27(6.3) | 19(4.1) | ||
Anastomotic methods | 52.952 | < 0.001 | ||
Bills I Bills II | 111(25.7) 41(9.5) | 99(21.5) 16(3.5) | ||
Bills II + Braun | 43(10.0) | 122(26.5) | ||
R-Y | 204(47.2) | 177(38.4) | ||
Others | 33(7.6) | 47(10.2) | ||
Surgery time(min) | 175.24\(\pm\)68.02 | 180.60\(\pm\)83.14 | -0.925 | 0.355 |
Postoperative hospital stay | 8.47\(\pm\)3.22 | 8.10\(\pm\)3.15 | 1.744 | 0.082 |