Table 2.
Results of multivariate logistic regression analysis.
| Risk Factor | Estimate | OR | Std error | 95% CI Lower | 95% CI Upper | p Value |
|---|---|---|---|---|---|---|
| Const1 | −3.2976 | 0.037 | 0.2979 | (0.0206 | 0.0663) | <0.001 |
| Season | −2.3127 | 0.099 | 0.2559 | (0.0600 | 0.1635) | <0.001 |
| Haller SDV2 | 0.5772 | 1.7811 | 0.2469 | (1.0978 | 2.8897) | 0.0194 |
| ASRA2 | 0.3643 | 1.4395 | 0.1737 | (1.0241 | 2.0235) | 0.036 |
| SRA2 | 1.4536 | 4.2783 | 0.2474 | (2.6342 | 6.9485) | <0.001 |
| Orthopedic triangle3 | −0.4031 | 10.668 | 0.2345 | (0.4220 | 1.0581) | 0.0856 |
| LAS OT3 | 1.0199 | 2.773 | 0.2308 | (1.7640 | 4.3591) | <0.001 |
| LH OT3 | 0.8255 | 2.2831 | 0.2095 | (1.5142 | 3.4423) | 0.0001 |
| RMT4 | 0.3531 | 1.4235 | 0.187 | (0.9867 | 2.0537) | 0.059 |
| Muscle thickness4 | 0.5000 | 1.6500 | 0.3100 | (−0.4700 | 1.4700) | 0.0313 |
| BMI4 | −0.3603 | 0.6975 | 0.2488 | (0.4283 | 1.1358) | 0.0147 |
| CWT4 | −1.0836 | 0.3384 | 0.2081 | (0.2250 | 0.5088) | <0.001 |
| Weight | 0.4158 | 1.5156 | 0.1694 | (1.0873 | 2.1125) | 0.0141 |
1Intercept term (Const): OR: 0.04, p-value<0.001 the intercept term represents the basic probability of an event occurring when there is no influencing factor. The OR here is very small, which means that the risk of poor wound healing is extremely low when there is no influencing factor.
2Haller SDV: OR: 1.78,p=0.002, this variable is related to the change in chest wall elevation after surgery. The greater the postoperative elevation, the greater the probability of poor wound healing. Absolute sternal rotation angle (ASRA), and Sternum rotation angle (SRA) are similar in principle.
3Orthopedic triangle (OT): OR=10.7, p-value>0.05. The OR of this factor is very large, indicating that it greatly increases the risk of poor wound healing, even more than 10 times. This is an extremely significant factor, with a p-value >0.05, indicating that it is not statistically very significant; As OT = Length of the adjacent side of the orthopedic triangle (LAS OT)/length of the hypotenuse of the orthopedic triangle (LH OT), the other two significant factors were not analyzed in detail;.
4Relative muscle thickness (RMT), Muscle thickness (MT), Body Mass Index (BMI), and chest wall thickness (CWT): These factors are independently related to poor wound healing, but the p values are all greater than 0.05, which did not reach statistical significance, indicating that they have an impact on wound healing but are not an independent determining factor.