TABLE 1.

FPE AND MFPE RATES

THROMBECTOMY TECHNIQUE	Number of Studies (percentage)	FPE Rate ( 95% CI)	I2 heterogeneity
ASPIRATION	12 (30 %)	29 (22–37)%	90%	P-value
STENT RETRIEVER	18 (45%)	34 (28–40)%	92%	0.17
COMBINATION	3 (7.5%)	26 (20–32)%	0%
NOT SPECIFIED	7 (17.5%)	27 (22–32)%	87%
OVERALL	40	28 (26–32)%	90%
		mFPE Rate ( 95% CI)
ASPIRATION	21 (34%)	48% (40–55)	93%	P-value
STENT RETRIEVER	30 (48%)	48% (44–53)	90%	0.20
COMBINATION	5 (8%)	58% (48–68)	66%
NOT SPECIFIED	7 (10%)	34% (28–40)	89%
OVERALL	63	45% (42–48)	92%

FPE: First pass effect; mFPE: modified first pass effect.