## 4 Discussion  
Patients ventilated for prolonged periods often experience progressive chronic respiratory failure and substantial comorbidity. They also consume a large percentage of intensive care resources. It is, therefore, necessary to identify the significant factors related to RCC patients' medical outcomes. The results of this study indicated that BMI, APACHE II scores, and patient source are related to the medical outcomes of RCC patients. Compared to patients with successful weaning, critical or deceased patients were characterized by being obese (BMI value \(\geq\) 27.0), transferred from home, and having APACHE II scores \(\geq\) 25. In ventilated patients, obesity (BMI value \(\geq\) 27.0) was found to be related to higher odds of death or critical medical outcomes compared with normal-weight patients, whereas overweight (BMI value between 24.0 to 26.9) and underweight patients (BMI value \(<\) 18.5) were not found to be significantly associated with the distribution of medical outcomes. This result implies that obesity may play an important role in the prognosis of RCC patients. These results are related to the extant literature. [PERSON] [22], for instance, suggested that obesity may be a significant factor for the pathogenesis of pulmonary diseases, which contains pro-inflammatory mediators produced in the adipose tissue that induces a state of systemic inflammation [22]. Some researchers have also stated the probability of a higher frequency of organ dysfunctions in obese patients [23; 24; 25]. However, other studies have found that a BMI less than 18.5 kg/m\({}^{2}\) was associated with increased mortality in ICU patients [26; 27]. The possible reasons for this may be that BMI status was presented to be an indicator of general nutrition, and sufficient nutrition is important to help respiratory muscle contractility and the successive ability to encperorate phlegm. As such, the effect of obesity related to medical outcomes of RCC patients needs further investigation. \begin{table}
\begin{tabular}{c c c c c c} \hline \hline
**Class** & **Precision** & **Recall** & **F-Measure** & **ROC Area** & **PRC Area** \\ \hline Weaning & 75.50\% & 92.90\% & 83.30\% & 88.70\% & 83.60\% \\ \hline Critical Death & 86.00\% & 60.70\% & 71.20\% & 88.90\% & 78.90\% \\ \hline RCW & 81.50\% & 71.00\% & 75.90\% & 90.60\% & 81.10\% \\ \hline Weighted Avg. & 79.80\% & 78.80\% & 78.20\% & 89.20\% & 81.70\% \\ \hline \hline \end{tabular}
\end{table} 
Table 5: C4.5 algorithm performance for Model II with 5 basic and 12 disease attributes. Figure 2: C4.5 algorithm performance for Model II with 5 basic and 12 disease attributes. The APACHE II scoring system was developed by [PERSON] et al. in 1985 [5]. It was calculated by employing the values of 12 physiological variables, age, and chronic health status, each of which was assigned points using a similar tactic. Scores were allotted to the worst values of each variable for the calculation of the APACHE II scoring system. Studies have demonstrated that a growing score is closely associated with ROM in ICU patients and the outcome in a wide range of disease conditions [6; 28; 29]. The results of our study similarly demonstrate a significant association between APACHE II scores and the medical outcome of RCC patients. It was found that the higher the APACHE II score, the higher the risk of being critical or deceased. These findings confirm the proficiency of this scoring system to predict patients' outcomes according to the degree of severity of their disease. Individuals living at home are usually thought to be healthier and to have a better ability to take care of themselves than those staying in long-term care institutions. However, the results of this study demonstrate that RCC patients who were transported from home had worse medical outcomes than patients who were transferred from long-term care facilities. The risk of becoming critical or ROM for transported from home patients was found to be more than twofold (OR = 2.135).