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. Author manuscript; available in PMC: 2018 Feb 1.
Published in final edited form as: Ann Epidemiol. 2016 Dec 9;27(2):103–107.e2. doi: 10.1016/j.annepidem.2016.11.009

Figure 1. ORs for First-Trimester Maternal Smoking by Pre-Pregnancy BMI Derived from Logistic Regression Including Smoking-BMI Interaction.

Figure 1

Notes: ORs for smoking were estimated at BMI levels from 15 to 40 in increments of 1 unit. Isolated and non-isolated clefts are combined.