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Table 2.

Exposure and outcome definitions

Authors	Exposure (source)	Exposure (definitions)							Outcome (source)	Outcome (definitions)
Authors	Exposure (source)			BMI reference*	BMI overweight	BMI obese	BMI overweight + obese		Outcome (source)	Outcome (definitions)
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

Authors	Exposure (source)	Exposure (definitions)							Outcome (source)	Outcome (definitions)
Authors	Exposure (source)			BMI reference*	BMI overweight	BMI obese	BMI overweight + obese		Outcome (source)	Outcome (definitions)
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.