Bishop Score to Induction Success Prediction

Predicts likelihood of vaginal delivery following labour induction based on Bishop score: ≥8 = high success rate (~95%), similar to spontaneous labour; 6–7 = moderate (70–80%); 4–5 = fair (50–70%); <4 = low (<50%), cervical ripening strongly recommended. Nulliparity and post-dates reduce success at any given score.

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Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
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How It Works

Predicts likelihood of vaginal delivery following labour induction based on Bishop score: ≥8 = high success rate (~95%), similar to spontaneous labour; 6–7 = moderate (70–80%); 4–5 = fair (50–70%); <4 = low (<50%), cervical ripening strongly recommended. Nulliparity and post-dates reduce success at any given score

Each component has a specific meaning:

  • Bishop score: ≥8 = high success rate — The bishop score: ≥8 = high success rate recorded for the scenario being assessed.
  • Similar — The similar recorded for the scenario being assessed.

Note: Interpret the bishop induction success result against the thresholds and context described above.

How to Use

Enter the Bishop score: ≥8 = high success rate, similar for the scenario you are assessing. Predicts likelihood of vaginal delivery following labour induction based on Bishop score: ≥8 = high success rate (~95%), similar to spontaneous labour; 6–7 = moderate (70–80%); 4–5 = fair (50–70%); <4 = low (<50%), cervical ripening strongly recommended. Nulliparity and post-dates reduce success at any given score. Use the bishop induction success result to inform your calculation.

Frequently Asked Questions