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. Author manuscript; available in PMC: 2019 Jan 1.
Published in final edited form as: Med Clin North Am. 2018 Jan;102(1):87–106. doi: 10.1016/j.mcna.2017.08.008

Table 2.

Extremely Preterm Birth Among Women with Obesity in Sweden from 1992–2010

BMI (kg/m2) Rate (%) Odds Ratio (95% CI)
18.5–<25 0.17
25–<30 0.21 1.26 (1.15–1.37)
30–<35 0.27 1.58 (1.39–1.79)
35–<40 0.35 2.01 (1.66–2.45)
40+ 0.52 2.99 (2.28–3.92)

Adapted from Cnattingius S, Villamor E, Johansson S, et al. Maternal obesity and risk of preterm delivery. JAMA 2013;309(22):2364; with permission.