What is the best prophylaxis against venous thromboembolism in Asians following total knee arthroplasty? A systematic review and network meta-analysis

Table 3 Grade system evaluation for the quality of evidence

Number of studies	Risk of bias	Imprecision	Inconsistency	Indirectness	Publication bias
Primary outcomes
VTE incidence (ultrasound)—7	L	L	L	M	VL
VTE incidence (venography)—5	M	M	M	M	L
VTE incidence (symptomatic)—8	M	H	H	M	M
PE incidence—11	M	H	H	L	M
Secondary outcomes
Minor bleeding—4	M	M	M	L	L
Major bleeding—6	M	H	H	M	L

H, high certainty; M, moderate certainty; L, low certainty; VL, very low certainty

ISSN: 2234-2451