Table:
Study	Filter Type	No. Patients	Duration of Insertion (mean) (days) (range)	Insertion Complication*	Filter Migration	IVC Penetration	Caval Occlusion	Failed Retrieval Rate
Rosenthal et al. 2004[55]	Optease	94	19 (5-25)	6 (6.4%)	0	1	0	0/31
Allen et al. 2005[54]	Gunther Tulip	51	NR	0/51	0	0	0	1/25 (4%)
Offner et al. 2003[53]	Gunther Tulip	44	14 (3-30)	0/44	0	0	0	1/40 (2.5%)
Hoff et al. 2004[52]	Gunther Tulip	35	10 (6-14)	0/35	0	0	0	0/18
TOTAL	224	6/224 (2.6%)	0	1/224 (0.4%)	0	2/114 (2.8%)

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| Study | Filter Type | No. Patients | Duration of Insertion (mean) (days) (range) | Insertion Complication* | Filter Migration | IVC Penetration | Caval Occlusion | Failed Retrieval Rate | 
 | --- | --- | --- | --- | --- | --- | --- | --- | --- | 
 | Rosenthal et al. 2004[55] | Optease | 94 | 19 (5-25) | 6 (6.4%) | 0 | 1 | 0 | 0/31 | 
 | Allen et al. 2005[54] | Gunther Tulip | 51 | NR | 0/51 | 0 | 0 | 0 | 1/25 (4%) | 
 | Offner et al. 2003[53] | Gunther Tulip | 44 | 14 (3-30) | 0/44 | 0 | 0 | 0 | 1/40 (2.5%) | 
 | Hoff et al. 2004[52] | Gunther Tulip | 35 | 10 (6-14) | 0/35 | 0 | 0 | 0 | 0/18 | 
 | TOTAL |  | 224 |  | 6/224 (2.6%) | 0 | 1/224 (0.4%) | 0 | 2/114 (2.8%) |