Internal validation of a prediction scale of mortality due to cardiovascular affection in elderly
Keywords:
elderly, risk factors, cardiovascular disease, prediction models.Abstract
Introduction: The validation of risk prediction methods is important to establish appropriate preventive measures.
Objective: To evaluate the internal validity of a mortality scale due to cardiovascular affection in elderly.
Methods: An analytic, observational, retrospective and case-control study was carried out, in 58 dead patients (cases) and 134 alive patients (control), belonging to 3 health areas (Ramón López Peña, Municipal and 28 de Septiembre polyclinics) in Santiago de Cuba municipality, during 2021. To validate this scale the discriminative capacity and calibration; appearance, criterion and construct validity were evaluated, as well as its reliability and internal strength.
Results: The designed scale discriminated better than the EPICARDIAN scale in both sexes; 68.8 % of the deaths in the validation group were classified as high risk. The value of Cronbach´s alpha coefficient was 0.639 and the standardized one was 0.564.
Conclusions: The evaluated scale calibrates appropriately when applied to another population with similar characteristics to the one it gave rise to and it pertinently discriminates against people classified as high risk of dying due to atherosclerotic cardiovascular disease.
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References
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