Trial reportPloS one2022
Pre-induction cervical assessment using transvaginal ultrasound versus Bishops cervical scoring as predictors of successful induction of labour in term pregnancies: A hospital-based comparative clinical trial.
Trial report in PloS one, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
20 citing papers in PubMed, 24 citations in OpenAlex.
- Objective Cervical Stiffness Assessment Using the Pregnolia System Prior to Induction of Labour: The CASPAR Feasibility Cohort Study.BJOG : an international journal of obstetrics and gynaecology · 2026Observational
- Prediction of Outcome of Labour Induction: Comparison of Transvaginal Sonographic Parameters with Bishop Score.Journal of obstetrics and gynaecology of India · 2026Article
- Comparative analysis of transvaginal sonographic cervical assessment and Bishop Score in predicting labour induction success at a tertiary hospital in Ghana.Ghana medical journal · 2026Article
- Cervical Ultrasound Assessment vs Bishop Score in Predicting Labor Induction Outcomes Among Nulliparous Women.International journal of women's health · 2026Article
- Construction of a nomogram model for predicting vaginal birth after induction of labor in pregnant women with fetal growth restriction at term.Frontiers in medicine · 2026Article
- Comparison of an Ultrasound-Based System and the Bishop Score for Predicting Labor Induction Timing in Singleton Pregnancies at Term: A Prospective Cohort Study.International journal of women's health · 2026Article
- Double-Balloon Catheter Alone or Combined with Oxytocin, Dinoprostone, or Misoprostol for Labor Induction in Late- and Post-Term Pregnancies: A Retrospective Cohort Study.International journal of women's health · 2026Article
- Comparative Effectiveness, Safety, and Cost-Effectiveness of Labour Induction Methods: A Systematic Review.Cureus · 2025Review
- Review
- Association between placental site and successful induction of labor among postdate primiparous women.Archives of gynecology and obstetrics · 2025Article
- Observational
- Prediction Model for Successful Induction of Labor by Fetal Middle Cerebral Artery Pulsatility Index and Obstetric Factors in Term Pregnancy: A Prospective Cohort Study.Obstetrics and gynecology international · 2025Article
- Comparing Pre-Induction Ultrasound Parameters and the Bishop Score to Determine Whether Labor Induction Is Successful.Medicina (Kaunas, Lithuania) · 2024Observational
- Effect of cervical Bishop score on induction of labor at term in primiparas using Foley catheter balloon: a retrospective study.BMC pregnancy and childbirth · 2024Article
- Transvaginal Ultrasound Versus Bishop Score in Predicting Labour Dystocia at Full-Term Nullipara Undergoing Labour Induction.Journal of family & reproductive health · 2024Article
- Article
- Assessment of different sonographic cervical measures to predict labor induction outcomes: a systematic review and meta-analysis.Quantitative imaging in medicine and surgery · 2023Article
- Influence factor analysis and prediction model of successful application of high-volume Foley Catheter for labor induction.BMC pregnancy and childbirth · 2023Article
- The Association between Cervical Length and Successful Labor Induction: A Retrospective Cohort Study.International journal of environmental research and public health · 2023Article
- Nomogram based on the final antepartum ultrasound features before delivery for predicting failed spontaneous vaginal delivery in nulliparous women.Frontiers in surgery · 2022Article
Corrections and comments
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Authors and funding
8 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveTo evaluate the association between transvaginal ultrasound scan of cervix and Bishop's score in predicting successful induction of labour, cut-off points and patients' tolerability and acceptance for both procedures.
designA comparative clinical trial.
settingA tertiary hospital in Selangor, Malaysia.
participants294 women planned for elective induction of labour for various indications were included. All women had transvaginal ultrasound to assess the cervical length and digital vaginal examination to assess the Bishop cervical scoring by separate investigators before induction of labour. PRIMARY OUTCOME MEASURE: To evaluate the association of the cervical length by transvaginal ultrasound scan and Bishop score in predicting successful induction of labour. SECONDARY OUTCOME MEASURE: Variables associated with successful induction of labour and patients' tolerability and acceptance for transvaginal ultrasound scan of cervix.
resultsThere was no statistically significant difference among the vaginal and Caesarean delivery groups in terms of mean maternal age, height, weight, body mass index, ethnicity and gestational age at induction. Vaginal delivery occurred in 207 women (70.4%) and 87 women (29.6%) delivered via Caesarean section. There was a high degree of correlation between the cervical length and Bishop score (r-value 0.745; p <0.001). Sonographic assessment of cervical length demonstrated a comparable accuracy in comparison to Bishop score. Analysis using ROC curves noted an optimal cut-off value of ≤27mm for cervical length and Bishop score of ≥ 4, with a sensitivity of 69.1% vs 67%, specificity 60.9% vs 55%, and area under the curves (AUCs) of 0.672 and 0.643 respectively (p <0.001). Multivariate logistic regression analysis demonstrated that parity (OR 2.70), cervical length (OR 0.925), Bishop score (OR 1.272) and presence of funnelling (OR 3.292) were highly significant as independent predictors of success labour induction. Women also expressed significantly less discomfort with transvaginal ultrasound compared with digital vaginal examination.
conclusionSonographic assessment of cervical measurement predicts the success of induction of labour with similar diagnostic accuracy with conventional Bishop score.
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Registered trials
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