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Table 1 Results of meta-analysis of studies comparing the risk for the development of GDM in women after BS with different subgroups, adapted from Galazis et al. [52]

From: Pregnancy after bariatric surgery: a narrative literature review and discussion of impact on pregnancy management and outcome

Control Group No. of Studies Participants OR (95% CI) p-Value
BS Control   
Overall 15 2724 136,075 0.47 (0.40–0.56) < 0.001
Women after BS vs. obese controls 6 1292 133,777 0.34 (0.18–0.67) < 0.001
Women after BS vs. same women before BS 5 377 343 0.71 (0.45–1.11) 0.14
Women after BS vs. other women before BS 3 1171 916 0.42 (0.22–0,79) 0.007
Women after BS vs. pre-pregnancy BMI matched obese women without BS 3 433 1537 0.77 (0.22–2.65) 0.68
Women after BS vs. pre-surgery BMI matched obese women without BS 6 864 133,388 0.24 (0.10–0.54) < 0.001