Table 1. – Key characteristics of the included studies.

First Author	Publication year	Country	Type of study	Study participants	Number of patients, n	Follow-up periods	All-cause deaths, n	HF hospitalization, n	All-Cause death or HF hospitalization, n	Reported outcomes	Quality of study	Level of significance adopted
Gargani25	2015	Italy	Prospective cohort	Inpatients	100	6 months	4	14	NA	HF hospitalization	9	p <0.05
Coiro26	2015	France	Prospective cohort	Inpatients	60	3 months	10	15	18	All-cause death or HF hospitalization	8	p <0.05
Gustafsson27	2015	Sweden	Prospective cohort	Outpatients	104	6 months	14	18	24	All-cause death or HF hospitalization	9	p <0.05
Cogliati28	2016	Italy	Prospective cohort	Inpatients	150	100 days	11	23	34	All-cause death or HF hospitalization	8	p <0.05
Platz29	2016	America (USA?)	Prospective cohort	Outpatients	195	6 months	15	48	54	All-cause death or HF hospitalization	9	p <0.05
Villanueva30	2016	Spain	Prospective cohort	Outpatients	54	6 months	NA	18	NA	All-cause death or HF hospitalization	9	NR
Coiro31	2016	France	Retrospective cohort	Inpatients	110	3 months	16	26	33	All-cause death or HF hospitalization	8	p <0.05
Miglioranza32	2017	Brazil	Prospective cohort	Outpatients	97	4 months	3	23	NA	All-cause death, HF hospitalization, MACE	8	p <0.05
Pellicori33	2018	United Kingdom	Prospective cohort	Outpatients	342	12 months	25	35	NA	All-cause death or HF hospitalization	9	p <0.05

HF: heart failure; MACE: major adverse cardiac events; NA: not applicable; NR: not reported.