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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