Cohort studies Cohort studies Cohort studies Cohort studies Cohort studies Cohort studies Cohort studies Cohort studies Cohort studies Cohort studies Cohort studies Cohort studies Cohort studies Cohort studies
N Author (Month, year) Selection Selection Selection Selection Comparability Comparability Outcome Outcome Outcome Final score Score Quality** Score Quality**
1 Bean D. et al., (May 2020) (37) B* C A* A* Demographic* Comorbidities* B* A* C 7 7 Good
2 Benelli G. et al., (April 2020) (38) B* C A* A* - - B* No C 4 4 Poor
3 Chodick G. et al., (May 2020) (46) B* C A* A* Demographic* Comorbidities* B* NA D 6 6 Poor
4 DeSpiegeleer A. et al., (May 2020) (47) B* C A* A* Demographic* Comorbidities* B* NA D 6 6 Poor
5 Feng Y. et al., (April 2020) (19) B* C A* A* - - B* NA D 4 4 Poor
6 Feng Z. et al., (April 2020) (48) B* C A* A* - - B* NA D 4 4 Poor
7 Khawaja A. et al., (May 2020) (49) A* A* A* A* Demographic* Comorbidities* B* NA D 7 7 Poor
8 Khera R. et al., (2020) (43) B* A* A* A* - - B* NA D 5 5 Poor
9 Li J. et al., (April 2020) (24) B* C A* A* - - B* NA D 4 4 Poor
10 Dauchet L. et al., (May 2020) (39) B* A* A* A* - - B* NA D 5 5 Poor
11 Ip Andrew et al., (April 2020) (27) B* C A* A* - - B* NA D 4 4 Poor
12 Liu Y. et al., (March 2020) (18) A* C A* A* - - B* NA D 4 4 Poor
13 Mehta N. et al., (May 2020) (41) A* A* A* A* - - B* NA D 5 5 Poor
14 Raisi-Estabragh Z. et al., May 2020) (50) B* A* A* A* - - B* 5 5 Poor
15 Rhee S. et al., (May 2020) (51) A* A* A* A* Demographic* Comorbidities* B* NA D 7 7 Poor
16 Yang G. et al., (May 2020) (25) B* A* A* A* - - B* B D 5 5 Poor
17 Zeng Zh.et al., (April 2020) (26) B* A* A* A* - - B* A* A* 7 7 Poor
18 Zhang P. et al., (April 2020) (20) A* A* A* A* Demographic* Comorbidities* B* NA D 7 7 Poor
19 Rossi P. et al., (April 2020) (44) A* C A* A* Demographic* Comorbidities* B* A* A* 8 8 Good
20 Reynolds H. et al., (May 2020) (22) B* A* A* A* Demographic* Comorbidities* B* NA D 7 7 Poor
21 Rentsch Ch. et al., (April 2020) (40) B* C A* A* - - B* NA D 4 4 Poor
22 Meng J. el al., (March 2020) (17) B* C A* A* - - B* NA D 4 4 Poor
23 Guo J. et al., (May 2020) (28) A* C A* A* - - B* NA D 4 4 Poor
24 Richardson S. et al., (April 2020) (23) A* C A* A* - - B* B D 4 4 Poor
Case-control studies Case-control studies Case-control studies Case-control studies Case-control studies Case-control studies Case-control studies Case-control studies Case-control studies Case-control studies Case-control studies Case-control studies Case-control studies Case-control studies
25 Bravi F. et al., (May 2020) (42) A* A* A* A* - - A* A* C 6 6 Poor
26 Mancia G. et al., (May 2020) (21) A* A* A* A* - Comorbidities * A* A* C 7 7 Good
27 Yan H. et al., (April 2020) (45) A* A* A* A* Demographic* - B* A* D 6 6 Good
(Note) **Studies were classified into good quality (3 or 4 stars in selection domain AND 1 or 2 stars in comparability domain AND 2 or 3 stars in outcome domain), fair quality (2 stars in selection domain AND 1 or 2 stars in comparability domain AND 2 or 3 stars in outcome/exposure domain) and poor quality (0 or 1 star in selection domain OR 0 stars in comparability domain OR 0 or 1 stars in outcome/exposure domain) (33) (Note) **Studies were classified into good quality (3 or 4 stars in selection domain AND 1 or 2 stars in comparability domain AND 2 or 3 stars in outcome domain), fair quality (2 stars in selection domain AND 1 or 2 stars in comparability domain AND 2 or 3 stars in outcome/exposure domain) and poor quality (0 or 1 star in selection domain OR 0 stars in comparability domain OR 0 or 1 stars in outcome/exposure domain) (33) (Note) **Studies were classified into good quality (3 or 4 stars in selection domain AND 1 or 2 stars in comparability domain AND 2 or 3 stars in outcome domain), fair quality (2 stars in selection domain AND 1 or 2 stars in comparability domain AND 2 or 3 stars in outcome/exposure domain) and poor quality (0 or 1 star in selection domain OR 0 stars in comparability domain OR 0 or 1 stars in outcome/exposure domain) (33) (Note) **Studies were classified into good quality (3 or 4 stars in selection domain AND 1 or 2 stars in comparability domain AND 2 or 3 stars in outcome domain), fair quality (2 stars in selection domain AND 1 or 2 stars in comparability domain AND 2 or 3 stars in outcome/exposure domain) and poor quality (0 or 1 star in selection domain OR 0 stars in comparability domain OR 0 or 1 stars in outcome/exposure domain) (33) (Note) **Studies were classified into good quality (3 or 4 stars in selection domain AND 1 or 2 stars in comparability domain AND 2 or 3 stars in outcome domain), fair quality (2 stars in selection domain AND 1 or 2 stars in comparability domain AND 2 or 3 stars in outcome/exposure domain) and poor quality (0 or 1 star in selection domain OR 0 stars in comparability domain OR 0 or 1 stars in outcome/exposure domain) (33) (Note) **Studies were classified into good quality (3 or 4 stars in selection domain AND 1 or 2 stars in comparability domain AND 2 or 3 stars in outcome domain), fair quality (2 stars in selection domain AND 1 or 2 stars in comparability domain AND 2 or 3 stars in outcome/exposure domain) and poor quality (0 or 1 star in selection domain OR 0 stars in comparability domain OR 0 or 1 stars in outcome/exposure domain) (33) (Note) **Studies were classified into good quality (3 or 4 stars in selection domain AND 1 or 2 stars in comparability domain AND 2 or 3 stars in outcome domain), fair quality (2 stars in selection domain AND 1 or 2 stars in comparability domain AND 2 or 3 stars in outcome/exposure domain) and poor quality (0 or 1 star in selection domain OR 0 stars in comparability domain OR 0 or 1 stars in outcome/exposure domain) (33) (Note) **Studies were classified into good quality (3 or 4 stars in selection domain AND 1 or 2 stars in comparability domain AND 2 or 3 stars in outcome domain), fair quality (2 stars in selection domain AND 1 or 2 stars in comparability domain AND 2 or 3 stars in outcome/exposure domain) and poor quality (0 or 1 star in selection domain OR 0 stars in comparability domain OR 0 or 1 stars in outcome/exposure domain) (33) (Note) **Studies were classified into good quality (3 or 4 stars in selection domain AND 1 or 2 stars in comparability domain AND 2 or 3 stars in outcome domain), fair quality (2 stars in selection domain AND 1 or 2 stars in comparability domain AND 2 or 3 stars in outcome/exposure domain) and poor quality (0 or 1 star in selection domain OR 0 stars in comparability domain OR 0 or 1 stars in outcome/exposure domain) (33) (Note) **Studies were classified into good quality (3 or 4 stars in selection domain AND 1 or 2 stars in comparability domain AND 2 or 3 stars in outcome domain), fair quality (2 stars in selection domain AND 1 or 2 stars in comparability domain AND 2 or 3 stars in outcome/exposure domain) and poor quality (0 or 1 star in selection domain OR 0 stars in comparability domain OR 0 or 1 stars in outcome/exposure domain) (33) (Note) **Studies were classified into good quality (3 or 4 stars in selection domain AND 1 or 2 stars in comparability domain AND 2 or 3 stars in outcome domain), fair quality (2 stars in selection domain AND 1 or 2 stars in comparability domain AND 2 or 3 stars in outcome/exposure domain) and poor quality (0 or 1 star in selection domain OR 0 stars in comparability domain OR 0 or 1 stars in outcome/exposure domain) (33) (Note) **Studies were classified into good quality (3 or 4 stars in selection domain AND 1 or 2 stars in comparability domain AND 2 or 3 stars in outcome domain), fair quality (2 stars in selection domain AND 1 or 2 stars in comparability domain AND 2 or 3 stars in outcome/exposure domain) and poor quality (0 or 1 star in selection domain OR 0 stars in comparability domain OR 0 or 1 stars in outcome/exposure domain) (33) (Note) **Studies were classified into good quality (3 or 4 stars in selection domain AND 1 or 2 stars in comparability domain AND 2 or 3 stars in outcome domain), fair quality (2 stars in selection domain AND 1 or 2 stars in comparability domain AND 2 or 3 stars in outcome/exposure domain) and poor quality (0 or 1 star in selection domain OR 0 stars in comparability domain OR 0 or 1 stars in outcome/exposure domain) (33) (Note) **Studies were classified into good quality (3 or 4 stars in selection domain AND 1 or 2 stars in comparability domain AND 2 or 3 stars in outcome domain), fair quality (2 stars in selection domain AND 1 or 2 stars in comparability domain AND 2 or 3 stars in outcome/exposure domain) and poor quality (0 or 1 star in selection domain OR 0 stars in comparability domain OR 0 or 1 stars in outcome/exposure domain) (33)