Research Article
Length of Hospital Stay Prediction at the Admission Stage for Cardiology Patients Using Artificial Neural Network
Table 2
Pearson’s correlation coefficient for each inpatient characteristic to LOS.
| | Characteristics | Correlation coefficient () |
value |
| | Female sex | 0.163 | 0.000 |
| | Age | 0.251 | 0.000 |
| | Location | 0.063 | 0.002 |
| | Main diagnosis | | | | Coronary atherosclerosis (ICD414) | −0.459 | 0.000 | | Heart failure (ICD428) | 0.351 | 0.000 | | Acute myocardial infarction (ICD410) | 0.128 | 0.000 |
| | Comorbidity | | | | Myocardial infarction (ICD410/412) | −0.078 | 0.000 | | Diabetes (ICD250) | 0.077 | 0.000 | | Cerebrovascular disease (ICD433/434/437/438) | 0.060 | 0.004 | | Cardiac dysrhythmias (ICD427) | 0.096 | 0.000 | | Heart failure (ICD428) | 0.044 | 0.032 | | Chronic airway obstruction (ICD496) | −0.022 | 0.280 | | Hypertensive disease (ICD401/402/403/404) | −0.125 | 0.000 | | Coronary atherosclerosis (ICD414) | −0.050 | 0.015 |
| | Intervention | | | | PTCA | −0.405 | 0.000 | | PCI | −0.346 | 0.000 | | Coronary angiography | −0.125 | 0.000 | | Coronary stenting | −0.200 | 0.000 | | Cardiac catheterization | −0.109 | 0.000 | | Left ventricular X-ray | −0.084 | 0.000 |
| | TW-DRG pay | −0.295 | 0.000 |
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( value < 0.01; value < 0.05).
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