External validation of models for predicting risk of colorectal cancer using the China Kadoorie Biobank

Table 3 Factors included in the risk scores used for the external validation

	Variables included in score
Author (year)	Age	Sex	BMI	Smoking	Alcohol intake	Diabetes	Physical activity	Other
Driver (2007) [25]	Yes	No	Yes	Yes	Yes	No	No
Ma Point (2010) [12]	Yes	No	Yes	Yes	Yes	No	Yes
Ma Cox (2010) [12]	Yes	No	Yes	Yes	Yes	No	Yes
Guo (2020) [28]	Yes	No	No	No	Yes	Yes	No	Waist circumference, occupational sitting time
Chen (2014) [29]	Yes	Yes	No	No	No	No	No	History of coronary heart disease, egg intake, defecation frequency
Betes (2003) [31]	Yes	Yes	Yes	No	No	No	No
Aleksandrova (2021) [30]	Yes	No	No	Yes	Yes	No	Yes	Waist circumference, body height, vegetable intake, dairy intake, processed meat intake, sugar, and confectionary intake
Imperiale (2021) [26]	Yes	Yes	No	Yes	Yes	No	Yes	Marriage, education, non-steroidal anti-inflammatory drugs (NSAID) use, metabolic syndrome, red meat, aspirin use
Hong (2017) [27]	Yes	Yes	No	Yes	Yes	No	No	Aspirin use

ISSN: 1741-7015