Table 2.

Risk factors of overcoagulation.

Item	Group 1 (N = 71)	Group 2 (N = 40)	OR [IC 95%]	P
Age > 65 years	5	12	5.867 [1.88–18.25]	0.001
Bad compliance	5	11	5.186 [1.65–16.31]	0.003
History of bleeding	6	10	3.736 [1.24–11.25]	0.014
Insufficient biological monitoring	7	10	3.153 [1.09–9.11]	0.028
Concomitant take of paracetamol	6	4	4.333 [1.03–18.10]	0.033
VKA therapy duration	11	4	0.623 [0.18–2.11]	0.444
Treatment intensity (>1 pill)	7	4	1.045 [0.28–3.82]	0.947