Table 2.

Predictors/prognostic factors associated with reduced long-term survival in asymptomatic carotid patients undergoing carotid endarterectomy

Study	Age	CAD	COPD	DM	CKD	CCO	Smoking	No statin	Low Hb	Other
Kragsterman et al. [59] (2006)	v	v		v						Previous vascular surgery
Ballotta et al. [60] (2007)		v		v		v
Alcocer et al. [61] (2013)	v	v	v	v	v
Conrad et al. [62] (2013)	v	v	v	v				v		Neck irradiation
Wallaert et al. [63] (2013)	v	v	v	v	v	v	v	v
Gupta et al. [64] (2013)	v	v	v							PAD, dependent functional status
Wallaert et al. [65] (2016)	v	v	v	v	v	v	v	v
Cooper et al. [66] (2016)	v	v	v				v
DeMartino et al. [67] (2017)	v	v	v	v		v	v	v	v	Low BMI, prior vascular surgery, ASA IV/V, no aspirin, prior contralateral CEA
Morales-Gisbert et al. [68] (2017)	v	v	v	v
Carmo et al. [69] (2018)	v	v	v	v	v			v
Keyhani et al. [70] (2019)	v	v	v	v	v				v	Low BMI, dementia
Dasenbrock et al. [71] (2019)	v			v	v	v				ASA IV/V

CAD, coronary artery disease; COPD, chronic obstructive pulmonary disease; DM, diabetes mellitus; CKD, chronic kidney disease±dialysis; CCO, contralateral carotid occlusion; Hb, hemoglobin; PAD, peripheral arterial disease; BMI, body mass index; ASA, American Society for Anesthesiology; CEA, carotid endarterectomy.