Variables

  17-OHP (n=29)

  No therapy (n=31)

     P value*

Period of gestation at delivery(weeks)

   36.59  ±  1.94

   34.30  ±  1.47

      0.004

Recurrent preterm labor

       11

       20

      0.039

Latency period (in days)

   25.48  ±  14.64

   16.42  ±  9.82

      0.003