Prediction model for the development of atrial fibrillation _ atrial fibrillation _ jama cardiology _ the jama network

Importance Atrial fibrillation (AF) contributes to substantial morbidity, mortality, and health care expenditures. Msci world stock index Accurate prediction of incident AF would enhance AF management and potentially improve patient outcomes.

Objective To validate the AF risk prediction model originally developed by the Cohorts for Heart and Aging Research in Genomic Epidemiology–Atrial Fibrillation (CHARGE-AF) investigators using a large repository of electronic medical records (EMRs).

Design, Setting, and Participants In this prediction model study, deidentified EMRs of 33 494 individuals 40 years or older who were white or African American and had no history of AF were reviewed and analyzed.


Msci emerging markets index fund The participants were followed up in the internal medicine outpatient clinics at Vanderbilt University Medical Center for incident AF from December 31, 2005, until December 31, 2010. Msci research Adjusting for differences in baseline hazard, the CHARGE-AF Cox proportional hazards model regression coefficients were applied to the EMR cohort. Msci index meaning A simple version of the model with no echocardiographic variables was also evaluated. Msci world healthcare index etf Data were analyzed from October 31, 2013, to January 31, 2014.

Main Outcomes and Measures Incident AF. Msci index data Predictors in the model included age, race, height, weight, systolic and diastolic blood pressure, treatment for hypertension, smoking status, type 2 diabetes, heart failure, history of myocardial infarction, left ventricular hypertrophy, and PR interval.

Results Among the 33 494 participants, the median age was 57 (interquartile range, 49-67) years; 57% of patients were women, 43% were men, 85.7% were white, and 14.3% were African American. Meaning of msci During the mean (SD) follow-up of 4.8 (0.9) years, 2455 individuals (7.3%) developed AF. Msci eafe index Both models had poor calibration in the EMR cohort, with underprediction of AF among low-risk individuals and overprediction of AF among high-risk individuals (10th and 90th percentiles for predicted probability of incident AF, 0.005 and 0.179, respectively). Db x trackers msci world index etf The full CHARGE-AF model had a C index of 0.708 (95% CI, 0.699-0.718) in our cohort. Msci world index dividend yield The simple model had similar discrimination (C index, 0.709; 95% CI, 0.699-0.718; P = .70 for difference between models).

Conclusions and Relevance Despite reasonable discrimination, the CHARGE-AF models showed poor calibration in this EMR cohort. Msci index fund This study highlights the difficulties of applying a risk model derived from prospective cohort studies to an EMR cohort and suggests that these AF risk prediction models be used with caution in the EMR setting. Index msci Future risk models may need to be developed and validated within EMR cohorts.