Nationwide population-based cohort study of adverse obstetric outcomes in pregnancies with myoma or following myomectomy: retrospective cohort study

Table 4 The obstetric outcomes in women with diagnosed myoma(s) or a history of myomectomy (Dataset 2)

Obstetric outcomes	Odds ratio (95% confidence interval)
Obstetric outcomes	Unadjusted	Adjusted ^b
Preterm birth
Group A^a	1	1
Group B^a	1.514 (1.419–1.616)	1.426 (1.336–1.523)
Group C^a	1.879 (1.679–2.103)	1.698 (1.517–1.902)
LBW
Group A	1	1
Group B	1.446 (1.369–1.528)	1.355 (1.282–1.432)
Group C	1.771 (1.609–1.949)	1.580 (1.435–1.741)
LGA
Group A	1	1
Group B	1.006 (0.939–1.078)	0.981 (0.916–1.051)
Group C	0.711 (0.609–0.830)	0.688 (0.589–0.803)

^aGroup A, Women who had never been diagnosed with myoma; Group B, Women who had diagnosed myoma(s) but no history of myomectomy; Group C, Women who had a history of myomectomy
^bAdjusted for age and parity
LBW Low birth weight, LGA Large for gestational age

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