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Bishop Scoring System

Modified 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

Published: 6 August 2009

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