Table 2.

Details of study quality evaluation according to the Cochrane's Handbook guideline.

References	Representativeness of the cohort	Confirmed diagnosis of PE	Reporting study protocol and all pre-specified outcomes	Validated assessment of outcome	Enough long follow-up duration	Adequacy of follow-up of cohorts	Other bias	Overall quality
Pengo et al. (11)	1	1	1	1	1	1	1	7
Becattini et al. (12)	0	1	1	1	1	1	1	6
Miniati et al. (13)	1	1	0	1	0	1	1	5
Martí et al. (15)	0	1	1	1	0	1	1	5
Klok et al. (14)	1	1	1	1	0	1	1	6
Poli et al. (16)	0	1	1	1	1	1	1	6
Surie et al. (17)	0	1	1	1	1	1	1	6
Berghaus et al. (18)	0	1	1	1	0	1	1	5
Giuliani et al. (19)	0	1	1	1	0	1	1	5
Held et al. (21)	1	1	1	1	0	1	1	6
Guérin et al. (20)	0	1	1	1	0	1	1	5
Kayaalp et al. (22)	0	1	1	1	0	1	1	5
Yang et al. (24)	1	1	1	1	1	1	1	7
Klok et al. (23)	1	1	1	1	0	1	1	6
Vavera et al. (25)	1	1	1	1	0	0	1	5
Xi et al. (26)	1	1	1	1	0	1	1	6
Xu et al. (27)	1	1	1	1	0	1	1	6
Pesavento et al. (28)	0	1	1	1	1	1	1	6
Coquoz et al. (29)	1	1	1	1	0	1	1	6
Puengpapat and Pirompanich (30)	1	1	0	1	1	0	1	5
Hsu et al. (31)	1	1	1	1	1	1	1	7
Rashidi et al. (32)	1	1	1	1	0	1	1	6