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Association between male alcohol consumption and fecundability, examined using restricted cubic splines. Curves were adjusted for male and female age, female alcohol intake (continuous), frequency of intercourse, previously fathered a child, education, BMI, smoking, consumption of sugar-sweetened beverages and consumption of caffeine. PRESTO analyses were adjusted further for race/ethnicity. Five knots were located at 0, 3, 5, 10 and 18. CI: confidence interval.
