Baseline characteristics and laboratory parameters according to Klotho tertiles.

Plus-minus values are means ± SD. Numbers with ranges in square brackets are medians and interquartile ranges. P values are for the comparisons between the three Klotho tertiles. To convert the values for calcium to milligrams per deciliter, multiply by 4.000. To convert the values for phosphate to milligrams per deciliter, multiply by 3.0969.
*The body-mass index is the weight in kilograms divided by the square of the height in meters.
†Based on 166 available clinically indicated transthoracic echocardiography results.
Abbreviations: ACE-I, angiotensin-converting enzyme inhibitors; AF, atrial fibrillation; AP, alkaline phosphatase; ARB, angiotensin receptor blocker; COPD, chronic obstructive pulmonary disease; FGF23, fibroblast growth factor 23; ICD, implantable cardioverter defibrillator; IQR, interquartile range; PTFE, Polytetrafluorethylen; PTH, parathyroid hormone; PKD, polycystic kidney disease; PVD Peripheral vascular disease; T, Tertile; U, unit.