Table 1 Characteristics of the Eligible studies
First Author | Year of publication | Study design | Sample size(case+control/events+free of events) | Area | Age(years) | Quality score |
|---|---|---|---|---|---|---|
Mackey | 2012 | cohort study | 5597(227 + 5370) | US | mean of 61.5 | 9 |
Hsia | 2008 | nested case-control study | group1:404(202 + 202) | US | 50 to 79 | 7 |
group2:304(152 + 152) | ||||||
Akinkuolie | 2014 | cohort study | model 1: 25706(947 + 24,759); model 2: 25232(911 + 24,321) | US | Free of events: median of 52.6; Events:median of 57.9 | 9 |
Berger | 2012 | nested case-control study | 1372(686 + 686) | US | median of 69 | 8 |
Duprez | 2009 | nested case-control study | 728(248 + 480) | cross-country | median of 49 | 5 |
Kuller | 2007 | case control study | 428(214 + 214) | US | mean of 51.3 | 8 |
Otvos | 2006 | nested case-control study | 1061(364 + 697) | US | mean of 64.4 | 7 |
Chandra | 2015 | cohort study | 1977 | US | not given | 8 |
Parish | 2012 | cohort study | 20,021(1796 + 18,225) | UK | 40 to 80 | 8 |
Musunuru | 2009 | cohort study | 4594(337 + 4257) | Sweden | not given | 9 |
Harchaoui | 2009 | nested case–control study | 2223(822 + 1401) | UK | mean of 65 | 9 |