Jung J, Heisel A, Tscholl D, Fries R, Schieffer H, Ozbek C
Innere Medizin III, Universitätskliniken des Saarlandes, Homburg/Saar,Germany.
Am J Cardiol. 1996 Jul 1;78(1):118-20. doi: 10.1016/s0002-9149(96)00242-1.
The results of heart rate variability analysis of the same Holter tape by using 4 different commercially available systems are statistically incomparable. This might have important implications when projecting and evaluating clinical trials.