Risk factor		Notes	Relative risk (95% confidence interval)
Diuretic use*		—	3.37 (2.75 to 4.12)
Alcohol intake		≥ 50 g per day vs. none	2.53 (1.73 to 3.70)
	Beer	≥ 2 drinks per day vs. none	2.51 (1.77 to 3.55)
	Spirits	≥ 2 drinks per day vs. none	1.60 (1.19 to 2.16)
	Wine	≥ 2 drinks per day vs. none	1.05 (0.64 to 1.72)
Hypertension		—	2.31 (1.96 to 2.72)
Body mass index		≥ 30 kg per m2 at 21 years of age	2.14 (1.37 to 3.32)
Sweetened beverage consumption		≥ 2 drinks per day vs. none	1.85 (1.08 to 3.16)
Fructose intake		Highest vs. lowest quintile	1.81 (1.31, 2.50)
Seafood consumption		Highest vs. lowest quintile	1.51 (1.17, 1.95)
Meat consumption		Highest vs. lowest quintile	1.41 (1.07, 1.86)
Dairy product consumption		Highest vs. lowest quintile	0.56 (0.42, 0.74)
Vitamin C intake		≥ 1,500 mg vs. < 250 mg per day	0.55 (0.38, 0.80)
Coffee consumption		≥ 6 cups per day vs. none	0.41 (0.19, 0.88)