ALB and Microscopic hematuria: Compared with patients in the never nephrotic group, those in the nephrotic proteinuria progression group showed higher levels of initial proteinuria [1.78 (IQR, 1.21–2.59) vs. 1.16 (IQR, 0.67–1.52) g/d; P < 0.001] and initial microhematuria [4.20 (IQR, 3.00–7.75) vs. 2.67 (IQR, 1.64–4.59) RBCs/HPF; P < 0.001], and a lower level of serum albumin [3.01 (SD, 0.73) vs. 3.29 (SD, 0.72) g/dl; P = 0.013].