Table 2 Characteristics of excluded studies
Author, date | Country | Type of study | Exclusion criteria |
|---|---|---|---|
Rennert, 2007 [17] | Israel | Literature review | Did not study the relation between meat and CRC |
Almurshed et al., 2009 [40] | Saudi Arabia | Case-control study | Did not study the relation between meat and CRC |
Tayyem et al., 2013 [35] | Jordan | Case-control study | Did not study the relation between meat and CRC |
Chenni et al., 2013 [37] | Algeria | Experimental study | Has been applied to animals |
Rohani-Rasaf et al., 2013 [39] | Iran | Ecological study | Risk not specified |
Aykan et al., 2015 [38] | Turkey | Cross-sectional study | Risk not specified |
Ghahremani et al., 2016 [36] | Iran | Cross-sectional study | Did not study the relation between meat and CRC |
Azzeh et al., 2017 [32] | Saudi Arabia | Case-control study | Risk not specified |
Omran et al., 2017 [38] | Jordan | Cross-sectional study | Risk not specified |
Al-Azri et al., 2019 [29] | Oman | Cross-sectional study | Risk not specified |
Ilgaz and Gözüm, 2018 [30] | Turkey | Cross-sectional study | Risk not specified |
Karimi et al., 2019 [31] | Iran | Cross-sectional study | Did not study the relation between meat and CRC |
Mhaidat et al., 2018 [33] | Jordan | Cross-sectional study | Risk not specified |
Nasaif and Qallaf, 2018 [34] | Bahrain | Cross-sectional study | Risk not specified |