Fig. 4

Comparisons of eGFR among subjects with simple renal cyst (SRC) and those without SRC (no-SRC). Error bars indicate standard errors. The same letter on the column indicates that the difference is not significant (p ≥ 0.05), and different letters a–c indicate that the difference is significant (p < 0.05). eGFR estimated glomerular filtration rate calculated by the 2009 CKD-EPI formula