Bishop Scoring SystemModified from Bishop EH. Pelvic scoring for elective induction. Obstet Gynecol 1964;24:267 Source: ACOG Practice Bulletin, Number 10, November 1999
| | FACTOR | | | | SCORE | DILATATION (cm) | EFFACEMENT (%) | STATION* | CERVICAL CONSISTENCY | POSITION OF CERVIX | 0
1
2
3 | Closed
1-2
3-4
5-6 | 0-30
40-50
60-70
80 | -3
-2
-1, 0
+1, +2 | Firm
Medium
Soft
— | Posterior
Mid-position
Anterior
— |
* Station reflects a -3 to +3 scale
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