The Perception of Evidence for Venous Thromboembolism Prophylaxis Current Practices after Cardiac Surgery: A Canadian Cross-Sectional Survey

Table 1

Relationship between VTE prophylaxis use and different responses.

Response	Used VTE prophylaxis (%)		value
	Yes	No
Incidence of DVT after cardiac surgery
<5%	55	6	0.35
>5%	29	10
Incidence of PE after cardiac surgery
<5%	82	16	1
>5%	4	0
Class of recommendation
Class I or class IIa	53	7	0.37
Class IIb	31	9
Level of evidence
Level A or level B	25	0	0.29
Level C	60	15
Presence of VTE protocol
Yes	69	0	<0.05
No	14	17
Influence of basic specialty
Surgical	61	10	0.61
Medical	22	7
Influence of subspecialization
Surgical	42	0	0.058
Medical	42	16
Gender
Male	78	6	0.41
Female	42	4

Statistically significant.
Not statistically significant but a positive trend towards significance.
Basic specialty: surgical = cardiac surgery and general surgery; medical = anesthesia, internal medicine, family medicine, and others.
Subspecialty: surgical = cardiac surgery subspecialty; medical = intensive care, cardiology, cardiac anesthesia, and others.