Table 1.

Association between patient demographic and sites, and the use of low molecular weight heparin (LMWH) for venous thromboembolism (VTE) prophylaxis and not using albumin for fluid resuscitation

	Appropriate VTE prophylaxis OR (95% CI)*	Appropriate fluid resuscitation OR (95% CI)†
Age	NS‡	0.999 (0.999 to 1.00)
Female	NS‡	NS‡
Any comorbidity	NS‡	NS‡
Admission type
Elective surgery	1.00 (reference group)	1.00 (reference group)
Emergent surgery	1.19 (0.92 to 1.53)	0.92 (0.88 to 0.95)
No surgery	1.34 (1.08 to 1.66)	1.02 (0.98 to 1.05)
APACHE II score (ICU admission)	0.958 (0.951 to 0.965)	0.989 (0.988 to 0.990)
Site
C1	1.00 (reference group)	1.00 (reference group)
C2	1.32 (1.07 to 1.64)	0.96 (0.92 to 1.00)
C3	1.13 (0.89 to 1.46)	0.98 (0.94 to 1.03)
C4	1.48 (1.15 to 1.90)	0.98 (0.93 to 1.02)
E1	2.12 (1.66 to 2.73)	0.90 (0.86 to 0.95)
E2	0.86 (0.71 to 1.05)	0.90 (0.87 to 0.92)
E3	7.26 (5.46 to 9.65)	0.92 (0.87 to 0.97)
E4	0.76 (0.63 to 0.92)	0.88 (0.85 to 0.91)
E5	1.61 (1.23 to 2.10)	0.75 (0.72 to 0.79)

All ‘C’ sites indicate intensive care unit (ICU) in Calgary and all ‘E’ sites indicate ICU in Edmonton.

*Multivariable generalised estimating equations logistic regression model with exchangeable correlation structure given daily measurements (clustering by patient); ‘appropriate’ considered use of LMWH.

†Standard multivariable logistic regression model given single measurement per patient; ‘appropriate’ considered not using albumin.

‡NS=non significant, removed from model.