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Bishop scoring system[1]

Bishop scoring system[1]
  0 1 2 3
Dilation, cm Closed 1 to 2 3 to 4 ≥5 to 6
Effacement, % 0 to 30 40 to 50 60 to 70 ≥80
Station* -3 -2 -1, 0 +1, +2
Cervical consistency Firm Medium Soft  
Position of the cervix Posterior Midposition Anterior  
* Based on a -3 to +3 scale.
Reference:
  1. ​Bishop EH. Pelvic scoring for elective induction. Obstet Gynecol 1964; 24:266.
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