Direct oral anticoagulants vs LMWH for cancer-associated thrombosis - updated evidence on bleeding risk, recurrence and patient-reported outcomes: A systematic review

Table 3 Quality assessment for observational studies (Newcastle-Ottawa Scale)

Ref.	Selection (4 points)	Comparability (2 points)	Outcome (3 points)	Total score	Quality rating
Coleman et al[13]	4	2	3	9/9	High
Kang et al[14]	4	2	3	9/9	High
Carney et al[16]	3	1	2	6/9	Moderate
Weitz et al[15]	4	2	3	9/9	High
Guo et al[26]	4	1	3	8/9	High
Farge et al[11]	3	1	2	6/9	Moderate
Schaefer et al[12]	4	2	3	9/9	High
Caroti et al[25]	3	2	3	8/9	High
Lee et al[17]	2	1	2	5/9	Moderate
Benzidia et al[19]	2	1	2	5/9	Moderate
Pelzer et al[28]	2	1	2	5/9	Moderate
How et al[18]	3	1	3	7/9	High
Font et al[20]	3	2	2	7/9	High
Zabeida et al[31]	2	1	2	5/9	Moderate

Quality ratings: High = 7-9 points; Moderate = 4-6 points; Low = 0-3 points.