Study-specific and pooled multivariate relative risks and 95% confidence intervals of colon cancer for comparison of the highest vs lowest quintile of dietary (a) and total (b) folate intake. The black squares and horizontal lines correspond to the study-specific relative risks and 95% confidence intervals for the comparison of quintile 5 to quintile 1 of folate consumption. The relative risks were adjusted for the same covariates listed in . The area of the black squares reflects the study-specific weight (inverse of the variance). The diamond represents the pooled relative risk and 95% confidence interval. Study abbreviations are the following: ATBC Alpha-Tocopherol Beta-Carotene Cancer Prevention Study, BCDDP Breast Cancer Detection Demonstration Project Follow-Up Cohort, CNBSS Canadian National Breast Screening Study, CPS2_f Cancer Prevention Study II Nutrition Cohort, women, CPS2_m Cancer Prevention Study II Nutrition Cohort, men, HPFS Health Professionals Follow-up Study, IWHS Iowa Women’s Health Study, NLCS_f Netherlands Cohort Study, women, NLCS_m Netherlands Cohort Study, men, NYS_f New York State Cohort, women, NYS_m New York State Cohort, men, NYUWHS New York University Women’s Health Study, NHSa Nurses’ Health Study (a), and NHSb Nurses’ Health Study (b), ORDET Prospective Study on Hormones, Diet and Breast Cancer, SMC Swedish Mammography Cohort, WHS Women’s Health Study