Maintenance tocolysis in twin pregnancies after preterm premature rupture of membranes and neonatal outcomes: a retrospective cohort study.

For both agent classes, maintenance therapy was associated with longer latency and higher GA at delivery; however, these associations did not reach statistical significance.

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The magnitude of this effect was substantial, extending the median latency period from less than one day in the controls to over ten days in the treatment group, an absolute difference that remained highly significant after multivariate adjustment.

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