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. 2019 Apr 25;19:138. doi: 10.1186/s12884-019-2287-6

Fig. 1.

Fig. 1

Association of age at menarche and GDM. Odds ratios (ORs) and 95% CIs derived from restricted cubic spline regression. Reference point is 14 years at menarche. ORs were adjusted for the same variables as model 4 in Table 2