Low dose compared to variable dose Warfarin and to Fondaparinux as prophylaxis for thromboembolism after elective hip or knee replacement surgery; a randomized, prospective study

Table 8 Composite endpoints

	Arm A	Arm B	Arm C
	n	n	n
DVT proximal	0	0	0
DVT distal	0	0	2
PE	0	0	0
Death on study	0	0	0
Exact Odds Ratios
Unadjusted	Estimate	95 % Confidence Limits	p-value
Odds Ratio	(median unbiased)
Arm A vs. Arm C	0.397	0 – 3.344	0.480
Arm B vs. Arm C	0.387	0 - 3.259	0.476
Noninferiority Analysis of Risk Difference
Risk Difference	Estimate	95 % Confidence Limits	p-value*
Arm C vs. Arm A	−0.0180	−0.0428 – 0.0067	<0.0001
Arm C vs. Arm B	−0.0180	−0.0428 – 0.0067	<0.0001

ISSN: 1477-9560