Association between birth weight and endometriosis.

OR: odds ratio; aOR: adjusted odds ratio; 95%CI: 95% confidence interval; SUP: superficial endometriosis; OMA: endometrioma; DIE: deep infiltrating endometriosis; Multivariate analysis has been adjusted for ethnicity and smoking status. Women with a birth weight between 2,501g and 4,000g served as a reference population. NA: not applicable, no patient in this category. Association between birth weight and endometriosis.