Rasch Analysis of the Dermatology Life Quality Index.

Background And Aims: Previous results of the Dermatology-Life-Quality-Index (DLQI) validation in Colombia based on the classical test theory (CTT) perspective have showed the need to delve into its measurement properties. Therefore, we aimed to assess the structural validity, internal consistency and item response analysis of the DLQI through the item response theory (IRT) or the Rasch model.

Material And Methods: We assessed the dimensionality of the DLQI, determined its difficulty, discrimination and differential functioning and went on to evaluate its internal consistency and discriminative validity among patients with inflammatory and non-inflammatory skin disease.

[Frailty and adverse outcomes in patients over 65 years old with acute coronary syndrome in a hospital cohort in Medellin, Colombia].

Objective: Several studies have demonstrated an association between frailty and worse outcomes in patients with acute coronary syndrome (ACS); however, there is a lack of evidence from Colombia. This study aims to evaluate the association between frailty and the risk of adverse outcomes in patients over 65 years old diagnosed with ACS.

Materials And Methods: A prospective cohort study was conducted, including patients over 65 years old who underwent coronary angiography due to an ACS diagnosis at a hospital in Medellín, Colombia.

Development and Validation of Nosocomial Bacterial Infection Prediction Models for Patients With Systemic Lupus Erythematosus.

Background: Hospital-acquired bacterial infections are associated with high morbidity and mortality rates in patients with systemic lupus erythematosus (SLE). This study aimed to develop and validate predictive models for the risk of hospital-acquired bacterial infections in patients with SLE.

Methods: A historical cohort study was designed for development, and another bidirectional cohort study was used for external validation.

Cognitive Outcomes in Autosomal-Dominant Alzheimer's Disease: A Comprehensive Review from a Colombian Kindred with the Presenilin-1 E280A Mutation.

Background: The largest identified kindred worldwide with a single mutation causing autosomal-dominant Alzheimer's disease (ADAD) is a family from Antioquia, Colombia, carrying the Presenilin-1 (PSEN1) E280A (Paisa) mutation. The majority of mutation carriers develop dementia, typically commencing in their late 30 s, with a median onset age of 49 years. Cognitive decline is a hallmark feature.