Should case management be considered a component of obstetrical interventions for pregnancies at risk of preterm birth?

This study found a 19% reduction in the preterm birth rate; this did not reach statistical significance, but “when risk factors for preterm birth were taken into account,” the finding was statistically significant (reduction from 9.1% to 7.4%; odds ratio, 0.78; relative risk,1.04; one-sided P value=.045).

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