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RR of endometriosis by the quartile of leptin, adiponectin and leptin to adiponectin ratio. Unconditional regression model of the RR of endometriosis based on increasing quartiles of leptin, adiponectin and leptin to adiponectin ratio among 1044 women in the NHS II cohort, adjusting for age, race, infertility status and BMI. Diamonds represent RRs; error bars denote 95% CIs; bold line illustrates the null effect.
