Characteristics of prospective studies on the association between general obesity [measured using body mass index (BMI)] and risk of colorectal cancer.

Abbreviations: BMI, body mass index; CRC, colorectal cancer; CC, colon cancer; RC, rectal cancer; DCC, distal colon cancer; PCC, proximal colon cancer; F, female; M, male; T, tertile; Q, quartile/quintile; HRT, hormone replacement therapy; NR, not report.
aStudy quality was judged based on the Newcastle-Ottawa Scale (range, 1–9 stars).