Table 1:
Summary of studied articles
| First author (yr) | Country | Design | Mean age (years) | Effect size | Sample size | NOS quality |
|---|---|---|---|---|---|---|
| Agarwal, Sh 2017 | USA | Prospective | 69.7 | Hazard Ratio | 362797 | ******* |
| Angeles, A 2016 | Mexic | Retrospective | 69.3 | Hazard Ratio | 854 | ******** |
| Arias-Oritz, N 2018 | Colombia | Prospective | 63.4 | Hazard Ratio | 375 | ****** |
| Brooke, H 2017 | Sweden | Prospective | 72 | Hazard Ratio | 14231 | ******* |
| Chang, Ch 2012 | Taiwan | Prospective | 57.6 | Hazard Ratio | 3223 | ***** |
| Dabbikeh, A 2017 | Canada | Retrospective | 59.3 | Hazard Ratio | 920334 | ******* |
| Dalton, S 2007 | Denmark | Prospective | 76.5 | Hazard Ratio | 25897 | ******* |
| Davoudi, E 2017 | Iran | Prospective | 62.5 | Hazard Ratio | 797 | ******** |
| Diniz, R 2016 | Brazil | Prospective | 71.3 | Hazard Ratio | 459 | ******* |
| Du, X 2008 | USA | Prospective | 74.9 | Hazard Ratio | 35029 | ***** |
| Eaker, S 2009 | Sweden | Prospective | 71.5 | Hazard Ratio | 9908 | ****** |
| Feller, A 2017 | Swiss | Prospective | 57.5 | Hazard Ratio | 10915 | ******* |
| Gajalakshmi, CK 1997 | India | Prospective | 76.9 | Hazard Ratio | 2080 | ******* |
| Goldberg, M 2015 | Israeel | Prospective | 60.2 | Hazard Ratio | 21034 | ******** |
| Hastert, T 2015 | USA | Prospective | 58.5 | Hazard Ratio | 25260 | ****** |
| Hussain, Sh 2008 | Sweden | Prospective | 68.4 | Hazard Ratio | 5718 | ***** |
| Lagerlund, M 2005 | Sweden | Prospective | 79.1 | Hazard Ratio | 8230 | ****** |
| Lan, N 2013 | Vietnam | Retrospective | 64.5 | Hazard Ratio | 799 | ******* |
| Larsen, S 2015 | Danmark | Prospective | 63.5 | Hazard Ratio | 1229 | ******* |
| Miki, Y 2014 | Japan | Prospective | 62.7 | Hazard Ratio | 22458 | ******** |
| Rezaianzadeh, A 2009 | Iran | Prospective | 69.9 | Hazard Ratio | 1148 | ***** |
| Schrijvers, C 1995 | Netherland | Prospective | 68.8 | Hazard Ratio | 3928 | ****** |
| Shariff, S 2015 | USA | Prospective | 60.8 | Hazard Ratio | 9372 | ******* |
| Stavraky, K 1996 | Canada | Prospective | 54.9 | Hazard Ratio | 575 | ******** |
| Teng, A 2017 | New Zealand | Prospective | 59.3 | Hazard Ratio | 11231 | ******* |