Table 2:

Differences in treatments and laboratory assessments by anticoagulation strategy. Abbreviations: IQR=interquartile range, PRBC=packed red blood cells, PLT=platelet, Hgb=hemoglobin. *Chi-squared test was used for all categorical variables and Wilcoxon Rank Sum test used to calculate p values for continuous variables. ϕ For patients without a recurrent VTE or clinically significant bleeding event

	No Anticoagulation	Any Anticoagulation	P value*
	n (%) or mean	n (%) or mean
Catheter Removal	19 (91)	30 (88)	1.0
Mean PLT Count During Severe Thrombocytopenia (<50×109/L)	32	48	<0.001
# days with PLTs <50×109/L	37.7	18.7	0.004
# days with PLTs <20×109/L	8.9	1.5	0.001
# days with PLTs <10×109/L	2.9	0.4	0.01
	Median (IQR)	Median (IQR)
Minimum PLT Count (x109/L)	6 (5–9)	27 (14–32)	<0.001
Minimum Hgb (g/dL)	7.6 (7.0–8.2)	8.0 (7.3–8.9)	0.154
PLT units per patient	4 (2–8)	4 (3–8)	0.293
PRBC units per patient	5 (2–12)	2 (0–4)	0.001
# days from VTE to PLT <50×109/L	14 (0–83)	19 (0–39)	0.673
Total Days of Anticoagulation from initial VTE ϕ	40 (10–92)	94 (71–112)	0.022