Intracoronary brachytherapy for the treatment of recurrent drug-eluting stent in-stent restenosis: A systematic review and meta-analysis

Table 1 Baseline characteristics of included studies

	Ref.	Year	Number of patients (n)	Mean age (years)	Percentage male (%)	DM (%)	Hypertension (%)	Type of brachytherapy	Mean/median radiation dose
1	Negi et al[6]	2016	186	65	62	47	95	Strontium/yttrium-90 beta radiation	23-25 Gray
2	Ohri et al[8]	2016	134	65	75	59	99	Strontium/yttrium-90 beta radiation	18.4 or 23 Gray
3	Mangione et al[7]	2017	101	66	67	53	98	Strontium/yttrium-90 beta radiation	18-23 Gray
4	Varghese et al[12]	2018	197	65	75	60	99	Strontium/yttrium-90 beta radiation	22 Gray
5	Megaly et al[10]	2021	116	66	69	-	-	Strontium/yttrium-90 beta radiation	22.6 Gray
6	Meraj et al[11]	2021	290	67	66	58	97	Strontium/yttrium-90 beta radiation	23 Gray