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Table 2.

Exposure and outcome definitions

AuthorsExposure (source)Exposure (definitions)
Outcome (source)Outcome (definitions)
BMI reference*BMI overweightBMI obeseBMI overweight + obese
Brown (11) Self-report BMI 5y before diagnosis <23.1 26.6-28.9 ≥28.9+ ≥26.6 Cancer registry and chart review AE and CA combined 
Chen (12) Self-report BMI 7-9 y before the study <25 25-28 ≥28 ≥25 Cancer registry and pathology report AE 
Cheng (13) Self-report BMI at age 20 y <19.5   ≥22.7 Cancer registry and pathology report AE 
Chow (14) Self-report BMI 1 y before diagnosis <23   ≥27 Cancer registry AE, CA separated 
Engeland (15) Measured BMI at the enrollment of the study 18.5-25 25-30 ≥30 ≥25 Cancer registry AE 
Incarbone (19) Measured BMI at the enrollment of the study <25 25-28 ≥28 ≥25 Medical record AE and CA combined 
Ji (48) Self-report BMI 1 y before diagnosis <19.5   ≥22.2 Medical record CA 
Kabat (18) Self-report BMI 5 y before diagnosis <22  ≥28 ≥28 Medical record AE (distal) and CA combined 
Lagergren (16) Self-report BMI 20 y before diagnosis <22.3 25-30 ≥30 ≥25.6 Cancer registry AE, CA separated 
Lindblad (10) Measured BMI 2 y before diagnosis 20-25 25-30 ≥30 ≥25 General Practitioner Research database AE, CA separated 
Tran (49) Measured BMI at the enrollment of the study <20   ≥23 Monthly visit by health workers CA 
Wu (47) Self-report BMI 1 y before diagnosis <23  ≥28 ≥28 Cancer registry AE, CA separated 
Zhang (20) Self-report BMI at diagnosis <25 25-28 ≥28 ≥25 Medical record AE and CA combined 
Zhang (50) Self-report BMI before diagnosis 18.5-24  ≥28 ≥24 Cancer hospital record CA 
AuthorsExposure (source)Exposure (definitions)
Outcome (source)Outcome (definitions)
BMI reference*BMI overweightBMI obeseBMI overweight + obese
Brown (11) Self-report BMI 5y before diagnosis <23.1 26.6-28.9 ≥28.9+ ≥26.6 Cancer registry and chart review AE and CA combined 
Chen (12) Self-report BMI 7-9 y before the study <25 25-28 ≥28 ≥25 Cancer registry and pathology report AE 
Cheng (13) Self-report BMI at age 20 y <19.5   ≥22.7 Cancer registry and pathology report AE 
Chow (14) Self-report BMI 1 y before diagnosis <23   ≥27 Cancer registry AE, CA separated 
Engeland (15) Measured BMI at the enrollment of the study 18.5-25 25-30 ≥30 ≥25 Cancer registry AE 
Incarbone (19) Measured BMI at the enrollment of the study <25 25-28 ≥28 ≥25 Medical record AE and CA combined 
Ji (48) Self-report BMI 1 y before diagnosis <19.5   ≥22.2 Medical record CA 
Kabat (18) Self-report BMI 5 y before diagnosis <22  ≥28 ≥28 Medical record AE (distal) and CA combined 
Lagergren (16) Self-report BMI 20 y before diagnosis <22.3 25-30 ≥30 ≥25.6 Cancer registry AE, CA separated 
Lindblad (10) Measured BMI 2 y before diagnosis 20-25 25-30 ≥30 ≥25 General Practitioner Research database AE, CA separated 
Tran (49) Measured BMI at the enrollment of the study <20   ≥23 Monthly visit by health workers CA 
Wu (47) Self-report BMI 1 y before diagnosis <23  ≥28 ≥28 Cancer registry AE, CA separated 
Zhang (20) Self-report BMI at diagnosis <25 25-28 ≥28 ≥25 Medical record AE and CA combined 
Zhang (50) Self-report BMI before diagnosis 18.5-24  ≥28 ≥24 Cancer hospital record CA 
*

If different BMI quartiles were provided for each gender, we report only the male values.

These values were calculated from the mean BMI and BMI distribution.

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