Table 1.

Keyword search used in the identification process.

Database	Search String
Scopus	TITLE-ABS-KEY ((“dietary inflammatory index” OR “dietary inflammatory score” OR “diet-related inflammation” OR “dietary inflammatory potential” OR “proinflammatory diet” OR “anti-inflammatory diet”) AND (“colorectal cancer *” OR “colorectal neoplas *” OR “colorectal tumo * r” OR “colorectal malignanc *”))
Web of Science	TS = ((“dietary inflammatory index” OR “dietary inflammatory score” OR “diet-related inflammation” OR “dietary inflammatory potential” OR “proinflammatory diet” OR “anti-inflammatory diet”) AND (“colorectal cancer *” OR “colorectal neoplas *” OR “colorectal tumo * r” OR “colorectal malignanc *”))
PubMed	((“dietary inflammatory index” OR “dietary inflammatory score” OR “diet-related inflammation” OR “dietary inflammatory potential” OR “proinflammatory diet” OR “anti-inflammatory diet”) AND (“colorectal cancer” OR “colorectal neoplasm” OR “colorectal tumor” OR “colorectal tumour” OR “colorectal malignancy” OR “colorectal malignancies”))
EBSCOHost	((“dietary inflammatory index” OR “dietary inflammatory score” OR “diet-related inflammation” OR “dietary inflammatory potential” OR “proinflammatory diet” OR “anti-inflammatory diet”) AND (“colorectal cancer” OR “colorectal neoplasm” OR “colorectal tumor” OR “colorectal tumour” OR “colorectal malignancy” OR “colorectal malignancies”))

The symbol * is used in the search strategy as truncation and wildcard function for keywords variation purposes.