Research Article
[Retracted] Development and Validation of a Risk Prediction Model for Ventricular Arrhythmia in Elderly Patients with Coronary Heart Disease
Table 2
Variable assignment description.
| Variable name | Variable type | Classified variable coding |
| Gender | 2 classification | Male = 0, Female = 1 | Age, year (quartile) | Ordered grade | 60∼66 year = 1 | 67∼75 year = 2 | 76∼82 year = 3 | Above 82 year = 4 | Smoking | 2 classification | Nonsomker = 0, smoker = 1 | Drinking | 2 classification | Nondrinker = 0, drinker = 1 | Diabetes | 2 classification | Nondiabetes = 0, diabetes = 1 | HLP | 2 classification | Non-HLP = 0, HLP = 1 | QTcd (ms) | Continuous variable | | Tp-e/QT (quartile) | Ordered grade | 0∼0.192 = 1 | 0.1921∼0.224 = 2 | 0.2241∼0.245 = 3 | Above 0.245 = 4 | SDNN | Continuous variable | | NT-proBNP, pg/ml (quartile) | Ordered grade | 0∼63.01 = 1 | 63.02∼171.4 = 2 | 171.41∼474.1 = 3 | Above 474.1 = 4 | cTnT (ng/ml) | Continuous variable | | Ca2+ (mmol/L) | Continuous variable | | LVEF (%) | Continuous variable | | LAV (ml) | Continuous variable | |
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