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Table 5 Feasibility of trials

From: Is it possible to estimate the minimal clinically important treatment effect needed to change practice in preterm birth prevention? Results of an obstetrician survey used to support the design of a trial

What would be the best outcome measure for a trial? (n = 544)
  Outcome Response
  prolongation of gestation   95 (18.1%)
  decreased fetal morbidity   379 (72.2%)
  decreased fetal mortality   50 (9.5%)
  decreased maternal morbidity   1 (0.2%)
  missing   19
Would you take part in a trial?
  Vaginal Progesterone
in multiple
pregnancies
(n = 544)
Progesterone IM in
singleton pregnancies
(n = 544)
Cerclage
(n = 544)
yes 450 (84.1%) 410 (77.5%) 239 (45.5%)
no 85 (15.9%) 119 (22.5%) 288 (54.6%)
missing 9 15 17