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Table 2 Characteristics of excluded studies

From: Meat and colorectal cancer in Middle Eastern and North African countries: update of literature review

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