Main findings
In the present study, there was a higher incidence of PTB, pPROM, and GH
among pregnant women with uterine myomas than that among the control
group. However, there was no significant association between uterine
myomas during pregnancy and II. In addition, II was not associated with
increased risk of PTB and pPROM in women with uterine myomas, contrary
to the results in the general population. This suggests that PTB may be
induced by mechanical factors in women with uterine myomas, rather than
by II.