Table 1

Patient characteristics of the pre-intervention, post-intervention and the total group of patients

Pre-intervention (n=248)Post-intervention (n=132)Total population (n=380)P-value
Man58%57%58%0.815
Age (years)66±1571±1568±150.005
ASA-classification0.765
II28%25%27%
III69%72%70%
IV3%3%3%
VKA = acenocoumarol87%85%86%0.544
Indication VKA
Atrial fibrillation59%55%57%0.417
Prosthetic valve3%7%5%0.057