Figure 1.

Association between distance to major roads and intersections and fecundability. Near-road residence was defined as living <50 meters from a highway or <100 meters from a major road. The left and center panels show results for women residing in the United States and Canada, respectively. The right panel shows results combined across the two countries using a fixed effects meta-analysis. Fecundability ratios are adjusted for age, race/ethnicity, income, education, BMI, physical activity, smoking, sugar-sweetened soda intake, HEI score, multivitamin/folic acid intake, parity, intercourse frequency, doing something to improve chances of conception, census tract median household income, census tract % with less than a high school education, and census tract % non-Hispanic White.