Table 4: Cross tabulation table showing the risk of DVT/PE as a function of both heart failure and altered mental level of consciousness.

Factor #No DVT/PE #DVT/PE % Patients with DVT/PE
HF=0;Altered=0; 1995 20 1.0
HF=0;Altered=1; 318 8 2.5
HF=1;Altered=0; 129 3 2.2
HF=1;Altered=1; 27 2 6.9