Table 3

Newcastle-Ottawa scale for assessing case-control study quality

Author, year (Pubmed ID)Selection
(Max=4)
Comparability
(Max=2)
Exposure
(Max=3)
Overall quality score (Max=9)
Afridi, 2011 (20480400)4127
Downer, 2016 (28056794)4239
Guallar, 2005 (11570992)2226
Hallgren, 2001 (11572934)3238
James, 2015 (25350952)4228
Kok, 1988 (3394701)3238
Mozaffarian, 2011 (21428767)3238
Reunanen, 1996 (8862478)2237
Ruiz-Navarro, 1998 (9618928)* 1124
Wade, 2015 (25889926)2227
Wennberg, 2007 (17537290)* 4239
Wennberg, 2011 (21048056)4239
Yoshizawa, 2002 (12456851)* 4239
*Studies not included in the meta-analysis of cardiovascular disease outcomes
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