The clinical characteristics of study subjects stratified by angiopoietin-2 quintile.

<p>Data are expressed as number (percentage) for categorical variables and mean±SD or median (25^th, 75^th percentile) for continuous variables, as appropriate.</p><p>*<i>P</i> < 0.05 compared with quintile 1</p><p>^#<i>P</i> < 0.05 compared with quintile 2</p><p>^†<i>P</i> < 0.05 compared with quintile 3</p><p>^&<i>P</i> < 0.05 compared with quintile 4.</p><p>^aAng-2 quintiles cut at 1405.0, 1730.0, 2160.9, and 2829.9pg/ml</p><p>^bInclude tubular interstitial disease, obstructive nephrology, hypertensive nephrology and unknown causes.</p><p>^cUrine protein was measured by dipstick test, urine protein 0 as no detectable proteinuria.</p><p>The clinical characteristics of study subjects stratified by angiopoietin-2 quintile.