Figure 2
The risks of incident atrial fibrillation by the quartiles of GFR-VIM. With an adjusted model, the risk of incident AF was significantly increased in the group with the highest variability of renal function (Q4). For the individuals with a middle range of GFR-VIM (Q2 and Q3), there were no significant differences in AF risk compared to the group with the lowest variability of renal function (Q1). Abbreviation: CI = confidence interval; AF = atrial fibrillation; eGFR = estimated glomerular filtration rate calculated by MDRD equation; GFR-VIM = variability independent of mean of eGFR; HR = hazard ratio, adjusted by Model 2 (age, sex, smoking status, alcohol consumption, regular physical activity, low income level, body-mass index, hypertension, diabetes, and baseline eGFR); IR = incidence rate in 1,000 person-years.
