Included Trials | Dedign | Region | database | Journal | Sample size | Period | aspirin use | Follow-up time | Surgerya non-user/ user | Chemotherapyb non-user/ user |
---|---|---|---|---|---|---|---|---|---|---|
gastric cancer | ||||||||||
 Spence et al. [11] 2018 | Cohort study | United Kingdom | cancer registries in England | Gastroenterology | 2391 | 1998–2012 | post-diagnosis use | until September 2015 | 947 (50.0%) / 273 (55.0%) | 720 (38.0%) / 146 (29.4%) |
 Spence et al. [11] 2018 | Cohort study | United Kingdom | the Scottish Cancer Registry | Gastroenterology | 1442 | 2009–2012 | post-diagnosis use | until January 2015 | 376 (33.3%) / 124 (39.7%) | 587 (51.9%) / 145 (46.5%) |
 Frouws et al. [7] 2017 | Cohort study | Netherlands | Eindhoven Cancer Registry | British Journal of Cancer | 750 | Jan 1998-Dec 2011 | Pre- and post-diagnosis use | NA | Unknown | Unknown |
esophageal cancer | ||||||||||
 Macfarlane et al. [13] 2015 | Cohort study | United Kingdom | PCCIU databaseIN Scotland | Cancer Epidemiology | 1197 | 1996–2010 | Pre- and post-diagnosis use | 9 | Unknown | Unknown |
 Spence et al. [11] 2018 | Cohort study | United Kingdom | cancer registries in England | Gastroenterology | 2733 | 1998–2012 | post-diagnosis use | until September 2015 | 879 (40.4%) 215(38.5%) | 108(50.0%) 235(42.0%) |
 Spence et al. [11] 2018 | Cohort study | United Kingdom | the Scottish Cancer Registry | Gastroenterology | 1921 | 2009–2012 | post-diagnosis use | until January 2015 | 266 (18.5%) 90 (18.6%) | 883 (61.5%) 256 (52.8%) |
 Frouws et al. [7] 2017 | Cohort study | Netherlands | Eindhoven Cancer Registry | British Journal of Cancer | 946 | Jan 1998-Dec 2011 | Pre- and post-diagnosis use | NA | Unknown | Unknown |
Colorectal cancer | ||||||||||
 Chan et al. [17] 2009 | Cohort study | USA | Nurses’ Health Study and the Health Professionals Follow-up Study | JAMA | 1279 | 1980–2002 | Pre- and post-diagnosis use | 11.8 years | Unknown | Unknown |
 Liao et all [20]. 2012 | Cohort study | USA | Nurses’ Health Study and Health Professionals Follow-up Study | NEJM | 964 | 1976-July 1st2006 | Pre- and post-diagnosis use | until death or January 2011 | Unknown | Unknown |
 Walker et al. [20] 2012 | Cohort study | UK | General Practice Research Database | British Journal of Cancer | 13,994 | 1987–2010 | Pre- and post-diagnosis use | 1.7–3.1 years | Unknown | Unknown |
 Domingo et al. [18] 2013 | Cohort study | UK | VICTOR trial | J Clin Oncol | 896 | Apr 2002-Sep 2004 | post-diagnosis use | NA | All patients | 430 (63.1%) 62 (55.9%) 59(65.6%)7 (50%) |
 McCowan et al. [19] 2013 | Cohort study | Tayside, United Kingdom | Health Informatics Centre | European Journal of Cancer | 2990 | 1st January 1997-30th December 2006 | Pre- and post-diagnosis use | 2.8 years | Unknown | Unknown |
 Kothari et al. [21] 2015 | Cohort study | Australia and USA | Moffitt Cancer Center and Royal Melbourne Hospital | Acta Oncol | 1487 | 1996–2010 | post-diagnosis use | 4.5 years | All patients | Unknown |
 Reimers et al. [5] 2014 | Cohort study | Netherlands | Eindhoven Cancer Registry | JAMA Intern Med. | 999 | 2002–2008 | post-diagnosis use | until January 1, 2012or death | All patients | Unknown |
 Cardwell et al. [16] 2014 | Case-control | UK | National Cancer Data Repository | Gastroenterology | 4794 | 1998–2007 | Pre- and post-diagnosis use | 7.2 years | Unknown | Unknown |
 Bains et al. [6] 2016 | Cohort study | Norway | Cancer Registry of Norway | J Clin Oncol | 23,162 | Jan 2004-Dec 2011 | Pre- and post-diagnosis use | median 3.0 yearsafter CRC diagnosis | 88.9% of the patients | Unknown |
 Frouws et al. [7] 2017 | Cohort study | Netherlands | Eindhoven Cancer Registry | British Journal of Cancer | 6335 | Jan 1998-Dec 2011 | Pre- and post-diagnosis use | NA | Unknown | Unknown |
 Newcomb et al. [14] 2017 | Cohort study | USA, Canada,Australia | Four database | J Clin Oncol | 2419 | 1997–2008 | Pre- and post-diagnosis use | 10.8 years | Unknown | Unknown |
 Gray et al. [23] 2018 | Cohort study | UK | Scottish Cancer Registry | BMC Cancer | 8391 | Jan 2009 - Jan2015 | Pre- and post-diagnosis use | 3.6 years | 2167 (34.7%) 472 (22.0%) | 5908 (94.7%) 2020 (94.0%) |
 Joseph et al. [24] 2019 | Cohort study | Hong Kong | Hong Kong Hospital | J Gastroenterol Hepatol | 3292 | 2004–2015 | post-diagnosis use | 10 years | All received surgery | Unknown |
 Zell et al. [15] 2009 | Cohort study | USA | California Teachers Study cohort | Cancer | 621 | Date of diagnosis to death or to December 31, 2005. | Pre-diagnosis use | 2.8 years | 26 (7%) 19 (8%) | 361 (91%) 207 (92%) |
 Din et al. [4] 2010 | Case–control study | UK | Study of Colorectal Cancer in Scotland | Gut | 4080 | to 30 April 2008 | Pre-diagnosis use | NA | Unknown | Unknown |
 Coghill et al. [14] 2011 | Cohort study | USA | Hutchinson Cancer Research Center AND SEER | Gut | 1737 | 1997–2002 | Pre-diagnosis use | 8 years | Unknown | Unknown |