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Table 2 A comparison of spontaneous cervical dilatation, difficult dilatation and bleeding prior to operation between the two groups of patients

From: A prospective, randomized, controlled trial comparing vaginal misoprostol and osmotic dilator in achieving cervical ripening before operative hysteroscopy

  Misoprostol group (n=53) Osmotic dilator group (n=47) P
Spontaneous cervical dilatation* (mean ± SD, cm) 8.0±1.8 9.6±2.2 <0.01
Difficult dilatation** (percentage) 22/53 (41.5%) 8/47 (17.0%) <0.01
Bleeding preoperation** (percentage) 41/53 (77.4%) 15/47 (31.9%) <0.01
  1. *Student’s t test
  2. **2×2 contingency table analysis