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Table 1 Adapted Newcastle-Ottawa quality assessment

From: Systematic review and meta-analysis of the sero-epidemiological association between Epstein-Barr virus and rheumatoid arthritis

Study ID

S1

S2

S3

S4

C1

C2

E1a

E1b

E2

E3

Ferrell and colleagues23

*

-

-

-

-

-

-

-

*

-

Lunemann and colleagues24

*

-

*

-

*

-

-

-

*

-

Saal and colleagues25

*

-

-

-

*

-

-

*

-

-

Yazbek and colleagues26

*

*

-

*

*

*

-

-

*

-

Mouzavi-Jazi and colleagues27

-

-

-

*

-

-

-

-

*

-

Blaschke and colleagues28

*

-

*

*

*

*

-

-

*

-

Venables and colleagues 198129

*

-

-

-

-

-

-

*

*

-

Venables and colleagues 198530

*

-

-

*

-

-

-

-

*

-

Sculley and colleagues31

*

-

*

-

-

-

-

-

*

-

Shirodaria and colleagues32

*

-

-

*

*

*

-

*

*

-

Silverman and colleagues33

*

-

-

*

*

*

-

-

*

-

Ng and colleagues34

*

-

-

-

-

-

-

-

-

-

Musiani and colleagues35

*

-

-

*

*

*

-

*

*

-

Yao and colleagues36

*

-

-

-

*

-

-

-

*

-

Philips and colleagues37

*

-

*

*

-

-

-

-

*

-

Nakabayashi and colleagues38

*

-

-

-

*

*

-

*

-

-

Us and colleagues18

*

-

*

*

*

-

-

-

*

*

Youinou and colleagues39

*

-

*

-

-

-

-

*

*

-

Draborg and colleagues40

*

-

-

-

-

-

-

*

*

-

Jorgensen and colleagues41

*

*

*

*

*

*

-

*

*

-

Zhang and colleagues 199919

*

-

*

*

-

-

*

*

*

-

Zhang and colleagues 19936

*

-

*

*

-

-

-

-

*

-

Davies and colleagues42

*

-

-

-

*

-

-

-

*

-

  1. Adapted Newcastle-Ottawa assessment scale. S1 objective case definition used, S2 cases consecutively recruited or obviously representative, S3 community controls, S4 controls specified as having no history of disease, C1 age-matched control, C2 controls matched for additional factor, E1a conducting analysis in a clinical laboratory (away from investigators), E1b explicit laboratory cutoffs for seropositivity mentioned, E2 same method of ascertainment for cases and controls, E3 missing data reported