Childhood Bladder and Bowel Dysfunction Questionnaire 5-12 years

Abstract

The Childhood Bladder and Bowel Dysfunction Questionnaire 5-12 years (CBBDQ 5-12j; Dutch: Childhood Bladder and Bowel Dysfunction Questionnaire 5-12 jaar) is a standardized, parent-reported psychometric instrument designed to assess, quantify, and monitor symptoms of combined lower urinary tract dysfunction and functional defecation disorders in children aged 5 to 12 years. Developed in the Netherlands by Marieke L. van Engelenburg-van Lonkhuyzen and an interdisciplinary consortium of pelvic physical therapists, pediatricians, and pediatric physical therapists, the questionnaire addresses the high clinical comorbidity between pediatric bladder disturbances (e.g., daytime urinary incontinence, nocturnal enuresis, urgency, frequency, withholding maneuvers) and bowel disturbances (e.g., functional constipation, fecal incontinence, withholding behavior). The instrument comprises 18 items organized into two distinct yet correlated clinical subscales: Bladder Dysfunction (10 items, score range 0–40) and Bowel Dysfunction (8 items, score range 0–32), yielding a Total Bladder and Bowel Dysfunction score ranging from 0 to 72. Responses are recorded on a 5-point Likert-type frequency scale ranging from 0 (No / never) to 4 (Very often: ≥3 times per week / daily). Psychometric evaluation across a large normative and clinical cohort (N = 1,333; mean age = 7.8 years, SD = 2.1) demonstrated robust internal consistency (Cronbach’s α = 0.78 for Bladder Dysfunction, α = 0.82 for Bowel Dysfunction, and α = 0.86 for the Total Scale), excellent test-retest reliability (intraclass correlation coefficients > 0.80), and strong construct, known-groups, and convergent validity against established international consensus criteria from the International Children’s Continence Society (ICCS) and the Rome IV criteria for pediatric functional gastrointestinal disorders. The CBBDQ 5-12j provides clinicians and researchers with an efficient, reliable, and evidence-based screening and outcome measurement tool for pediatric pelvic healthcare.

Keywords

Childhood Bladder and Bowel Dysfunction Questionnaire, CBBDQ 5-12j, pediatric incontinence, functional constipation, lower urinary tract symptoms, pediatric pelvic physical therapy, enuresis, encopresis, urotherapy, psychometrics

Authors

The CBBDQ 5-12j was developed by Marieke L. van Engelenburg-van Lonkhuyzen, PT, MSc, PhD, in close collaboration with specialized pediatric pelvic physical therapists, pediatricians, pediatric urologists, and researchers affiliated with the Department of Pediatric Physical Therapy and the Pelvic Care Center at Radboud University Medical Center (Radboudumc), Nijmegen, the Netherlands. Key contributors to the conceptualization, psychometric validation, and multi-center clinical trials include:

• Marieke L. van Engelenburg-van Lonkhuyzen — Physical Therapist, Pelvic Health Specialist, and Clinical Researcher, Radboudumc Amalia Children’s Hospital, Nijmegen, The Netherlands.
• Collaborating Clinical Consortium — Pediatric Pelvic Physical Therapy Research Group Netherlands (Nederlandse Vereniging voor Fysiotherapie bij Bekkenproblematiek en Pré- en Postpartum Gezondheidszorg [NVFB] and Nederlandse Vereniging voor Kinderfysiotherapie [NVFK]), with academic advisory support from pediatric urologists and gastroenterologists at Radboudumc and regional pediatric centers.

Purpose

Bladder and bowel dysfunction (BBD) in children represents a spectrum of interrelated elimination disorders involving the lower urinary tract and the lower gastrointestinal tract. Historically, pediatric lower urinary tract symptoms (LUTS)—such as daytime wetting, urgency, frequency, and nighttime bedwetting (nocturnal enuresis)—were evaluated in isolation from lower bowel disturbances such as functional constipation and fecal incontinence (encopresis). However, pediatric urology and gastroenterology have converged on the clinical recognition that the bladder and rectum share embryonic origins, sacral innervations (S2–S4 spinal segments), and anatomical proximity within the pelvic floor musculature. Consequently, dysfunction in one organ system routinely precipitates or perpetuates dysfunction in the other.

The primary purpose of the Childhood Bladder and Bowel Dysfunction Questionnaire 5-12 years is to provide a standardized, psychometrically validated, parent-administered assessment tool that captures the complete spectrum of pediatric elimination disorders within a single, integrated profile. The clinical and scientific objectives of the instrument include:

• Comprehensive Baseline Screening: To systematically screen children aged 5 to 12 referred for urinary incontinence, defecation complaints, abdominal pain, or recurrent urinary tract infections (UTIs) to identify unaddressed co-occurring bowel or bladder issues.
• Symptom Severity Stratification: To quantify the frequency and severity of functional elimination symptoms, distinguishing mild, intermittent presentations from severe, multi-system dysfunction requiring multidisciplinary care (e.g., combined medical management, pelvic floor physical therapy, behavioral urotherapy, and psychological support).
• Therapeutic Monitoring and Outcome Evaluation: To track longitudinal symptom change across therapeutic interventions, serving as an objective outcome metric for pelvic physical therapy, biofeedback training, bowel management protocols, and urotherapeutic behavioral modifications.
• Empirical Research Standardization: To provide academic investigators with a standardized, validated continuous outcome measure for pediatric clinical trials, epidemiological surveys, and translational studies evaluating pelvic floor rehabilitation.

Psychological Construct

The CBBDQ 5-12j operationalizes the umbrella construct of Pediatric Bladder and Bowel Dysfunction (BBD), defined as the concurrent or isolated manifestation of functional lower urinary tract symptoms and functional gastrointestinal defecation disorders in children who have achieved a developmental age of at least 5 years (the developmental threshold where physiological continence is expected). The construct is bifurcated into two correlated, anatomically and functionally linked latent dimensions:

1. Bladder Dysfunction Dimension (Items 1–10)

This subscale captures lower urinary tract symptoms characterized by storage, voiding, and circadian dysregulation, reflecting neurological, muscular, or behavioral disruptions of the micturition reflex:

• Daytime Incontinence and Leakage (Items 1 & 2): Involuntary daytime urinary loss ranging from continuous or intermittent drops to complete bladder emptying episodes in clothing.
• Micturition Frequency Extremes (Items 3 & 4): Pathological daytime pollakisuria (>7 micturitions per day, indicative of overactive bladder) or abnormally low voiding frequency (<4 micturitions per day, characteristic of the “lazy bladder” or postponement syndrome).
• Urgency and Incontinence Urgency (Item 5): A sudden, compelling desire to pass urine that is difficult to defer, frequently culminating in urge incontinence before reaching the toilet.
• Holding Maneuvers and Postponement (Item 6): Characteristic behavioral postures (such as squirming, heel-sitting, crossing legs, or the “Vincent’s curtsy”) deployed by children attempting to voluntarily suppress uninhibited detrusor contractions.
• Voiding Dyssynergia and Straining (Items 7 & 9): Increased intra-abdominal pressure needed to initiate or maintain urination, and interrupted, staccato, or fractionated urinary flow reflecting non-relaxing external urethral sphincter activity.
• Dysuria (Item 8): Burning, stinging, or painful sensations experienced during voiding, often secondary to recurrent cystitis, local vulvovaginitis, or pelvic hypertonicity.
• Nocturnal Enuresis (Item 10): Discrete episodes of involuntary urinary incontinence occurring during sleep in children aged 5 or older.

2. Bowel Dysfunction Dimension (Items 11–18)

This subscale measures functional defecation abnormalities according to criteria aligned with the Rome framework, capturing mechanical, behavioral, and sensory bowel disturbances:

• Defecation Frequency and Stool Consistency (Items 11 & 12): Abnormally low defecation frequency (<3 bowel movements per week) combined with hard, dry, scybalous, or pebble-like stool formations (corresponding to Bristol Stool Form Scale Types 1 and 2).
• Pain and Straining (Items 13 & 14): Severe physical distress, visceral pain, or excessive physical straining during defecation, even when the expelled stool is not objectively hardened, indicating pelvic floor dyssynergia (anismus).
• Fecal Incontinence and Soiling (Items 15 & 16): Unintentional loss of fecal matter ranging from minor involuntary staining/streaks in the underwear (encopresis/soiling secondary to fecal impaction with overflow) to loss of large amounts of solid stool.
• Stool Withholding Behavior (Item 17): Active deferral of defecation due to fear of pain, toilet phobia, or reluctance to interrupt play activities, mediated by voluntary contraction of the external anal sphincter and gluteal muscles.
• Defecation Urgency (Item 18): Sudden, precipitously intense rectal sensations of imminent stool evacuation resulting in rapid functional accidents.

Theoretical Framework

The conceptual framework underlying the CBBDQ 5-12j integrates the Biopsychosocial Model of Pediatric Illness (Engel, 1977) with the neurophysiological concept of the Sacral Pelvic Cross-Talk Reflex Arc and behavioral learning theory.

1. Neuro-Anatomical Pelvic Cross-Talk

The urinary bladder and the lower gastrointestinal tract share adjacent real estate within the pelvic cavity, supported by the levator ani muscle complex and innervated by convergent autonomic (pelvic splanchnic nerves) and somatic (pudendal nerve) pathways originating from sacral spinal cord segments S2–S4. Neurophysiological research confirms visceral-visceral cross-sensitization: chronic distension of the rectum by a large retained fecal mass directly compresses the posterior bladder wall, triggering mechanical bladder wall irritability, detrusor overactivity, reduced functional bladder capacity, and secondary bladder neck obstruction. Conversely, uncoordinated voluntary contractions of the external urinary sphincter to prevent daytime wetting habitually train children to co-contract the external anal sphincter, precipitating incomplete rectal emptying, stool retention, and secondary megarectum.

2. Behavioral Avoidance Conditioning

The developmental trajectory of pediatric elimination disorders frequently conforms to classical and operant conditioning paradigms. A child experiencing a single episode of painful defecation (e.g., passing a hard, fissure-inducing stool) develops a conditioned avoidance response. To avoid the anticipation of pain, the child actively engages in withholding behaviors (squirming, gluteal contraction). Over time, this negative reinforcement cycle induces rectal habituation: the rectal vault stretches to accommodate accumulated stool, mucosal sensation blunts, the normal urge to defecate diminishes, and liquid proximal stool seeps around the hardened impaction, leading to involuntary fecal soiling. This sequence induces profound emotional distress, parental frustration, and social withdrawal, compounding the child’s internalizing and externalizing psychological burdens.

Validity

The psychometric properties of the CBBDQ 5-12j have been rigorously examined using established COSMIN (COnsensus-based Standards for the selection of health Measurement INstruments) methodology.

Content Validity

Content validity was established through an iterative multi-phase consensus methodology involving multidisciplinary panels of pelvic physical therapists, pediatric physical therapists, pediatricians, pediatric nephrologists, and pediatric urologists. Item generation was anchored in the diagnostic definitions of the International Children’s Continence Society (ICCS) and the pediatric Rome III / Rome IV guidelines for functional gastrointestinal disorders. Pilot testing on representative parental focus groups confirmed high clarity, comprehensiveness, face validity, and feasibility, with a 100% completion rate without parental assistance.

Construct and Convergent Validity

Construct validity was demonstrated by evaluating a heterogeneous cohort of 1,333 children (including healthy community controls and clinical cohorts referred for micturition, defecation, or combined complaints). Convergent validity was established by correlating CBBDQ subscale scores against established clinical markers:

• The Bladder Dysfunction Subscale demonstrated strong, statistically significant correlations with frequency-volume voiding diaries (r = 0.62 to 0.74, p < .001) and clinical diagnoses of daytime urinary incontinence, overactive bladder, and dysfunctional voiding confirmed by uroflowmetry.
• The Bowel Dysfunction Subscale correlated significantly with objective bowel diaries, Bristol Stool Form ratings (r = −0.58 for stool consistency vs. impaction), and physician-verified fulfillment of Rome criteria for functional constipation (r = 0.68, p < .001).

Discriminant and Known-Groups Validity

Known-groups validation confirmed that the CBBDQ 5-12j clearly differentiates between healthy children and children diagnosed with primary bladder disorders, primary bowel disorders, and combined bladder and bowel dysfunction. Receiver Operating Characteristic (ROC) curve analyses revealed an Area Under the Curve (AUC) exceeding 0.88 for the Bladder Dysfunction subscale in discriminating children with confirmed LUTS from controls, and an AUC exceeding 0.90 for the Bowel Dysfunction subscale in identifying clinical constipation/encopresis cohorts. Effect sizes comparing clinical cohorts to asymptomatic age-matched peers were large (Cohen’s d > 1.25 across all primary domains).

Reliability

The reliability of the CBBDQ 5-12j has been demonstrated across internal consistency and temporal stability metrics:

Internal Consistency

In the primary validation study (N = 1,333), the instrument exhibited high internal consistency across both clinical and non-clinical populations:

• Bladder Dysfunction Subscale (10 items): Cronbach’s α = 0.78, indicating adequate internal consistency without item redundancy.
• Bowel Dysfunction Subscale (8 items): Cronbach’s α = 0.82, reflecting strong item homogeneity.
• Total Scale (18 items): Cronbach’s α = 0.86, confirming high composite reliability for the overall questionnaire.

Corrected item-total correlations for all individual items exceeded the recommended psychometric threshold of 0.30 (ranging from 0.34 to 0.71), confirming that each item contributes meaningfully to its assigned domain.

Test-Retest Reliability

Temporal stability was assessed in a stable subgroup of respondents over a two-week test-retest interval. Intraclass correlation coefficients (ICC, two-way random-effects model with absolute agreement) demonstrated high stability:

• Bladder Dysfunction Subscale ICC: 0.84 (95% CI: 0.79–0.88)
• Bowel Dysfunction Subscale ICC: 0.86 (95% CI: 0.81–0.90)
• Total Score ICC: 0.88 (95% CI: 0.84–0.91)

The standard error of measurement (SEM) and smallest detectable change (SDC) calculations confirmed that changes of ≥4 points on the Bladder subscale and ≥3 points on the Bowel subscale reflect true clinical change beyond measurement noise.

Factor Analysis

The structural validity of the CBBDQ 5-12j was examined using both Exploratory Factor Analysis (EFA) and Confirmatory Factor Analysis (CFA) across split validation subsamples.

Exploratory Factor Analysis (EFA)

Initial principal axis factoring with oblique (Promax) rotation supported a clear two-factor structure matching the theoretical distinction between urinary and gastrointestinal symptoms. The scree plot and eigenvalues (>1.0 criterion) justified the retention of two dominant factors:

• Factor 1 (Bladder Dysfunction): Accounted for approximately 28.4% of the total variance, with salient loadings (ranging from 0.42 to 0.81) from Items 1 through 10.
• Factor 2 (Bowel Dysfunction): Accounted for approximately 21.6% of the total variance, with salient loadings (ranging from 0.44 to 0.83) from Items 11 through 18.

Cross-loadings between the two factors were minimal (<0.25), while the inter-factor correlation was moderate (r = 0.42, p < .001), reinforcing that bladder and bowel dysfunctions are distinct symptom complexes that frequently co-occur.

Confirmatory Factor Analysis (CFA)

Subsequent Confirmatory Factor Analysis on an independent validation cohort confirmed the fit of the two-factor oblique model over a single-factor unidimensional model. The two-factor model yielded good goodness-of-fit indices:

• Chi-Square / Degrees of Freedom (χ²/df): 2.34 (indicating good fit)
• Comparative Fit Index (CFI): 0.942
• Tucker-Lewis Index (TLI): 0.931
• Root Mean Square Error of Approximation (RMSEA): 0.046 (90% CI: 0.040–0.052)
• Standardized Root Mean Square Residual (SRMR): 0.048

All standardized factor loadings were statistically significant at p < .001, confirming the structural integrity and dimensionality of the instrument.

Instrument / Measurement Tool

• Instrument Name: Childhood Bladder and Bowel Dysfunction Questionnaire 5-12 years (CBBDQ 5-12j)
• Original Language: Dutch (Childhood Bladder and Bowel Dysfuntion Questionnaire 5-12 jaar)
• Target Population: Parents or primary legal guardians of children aged 5 to 12 years (mean clinical age ~7.8 years)
• Administration Format: Paper-and-pencil self-report or digital/electronic health record (EHR) questionnaire
• Completion Time: Approximately 5 to 8 minutes
• Item Count: 18 parent-reported items
• Subscales:
  • Bladder Dysfunction Subscale: Items 1 through 10 (Score range: 0 to 40)
  • Bowel Dysfunction Subscale: Items 11 through 18 (Score range: 0 to 32)
• Response Scale (5-point Likert Frequency Format):
  • 0 = No / never (Nee / nooit)
  • 1 = Rarely (Zelden: <1 time per month)
  • 2 = Sometimes (Soms: 1-3 times per month)
  • 3 = Often (Vaak: 1-2 times per week)
  • 4 = Very often (Heel vaak: ≥3 times per week / daily)
• Scoring Rules:
  • All items are directly scored from 0 to 4. There are no reverse-scored items.
  • Bladder Dysfunction Score: Sum of items 1 through 10 (minimum = 0, maximum = 40).
  • Bowel Dysfunction Score: Sum of items 11 through 18 (minimum = 0, maximum = 32).
  • Total CBBDQ Score: Sum of all 18 items (minimum = 0, maximum = 72).
  • Interpretation: Higher numerical scores reflect greater frequency and severity of functional elimination symptoms. Subscale-specific thresholds established in Dutch normative data indicate clinically significant dysfunction when scores exceed the 90th percentile of the general pediatric population.

Permissions & Fee and Test Year

The Childhood Bladder and Bowel Dysfunction Questionnaire 5-12 years was developed and psychometrically validated in 2017 by Dr. Marieke L. van Engelenburg-van Lonkhuyzen as part of her doctoral research at Radboud University Medical Center, Nijmegen, the Netherlands. The questionnaire is an open-access clinical and scientific assessment tool available free of charge for non-commercial academic research, clinical screening, and educational purposes. Commercial organizations, pharmaceutical sponsors, or proprietary digital health platforms seeking to integrate or distribute the CBBDQ 5-12j must contact the primary author or the Technology Transfer Office at Radboudumc to obtain formal licensing agreements and permission.

References

• Austin, P. F., Bauer, S. B., Bower, W., Chase, J., Franco, I., Hoebeke, P., Rittig, S., Vande Walle, J., von Gontard, A., Wright, A., Yang, S. S., & Nevéus, T. (2014). The standardization of terminology of lower urinary tract function in children and adolescents: Update report from the Standardization Committee of the International Children’s Continence Society. The Journal of Urology, 191(6), 1863–1865. https://doi.org/10.1016/j.juro.2014.01.110
• Benninga, M. A., Faure, C., Hyman, P. E., St James Roberts, I., Schechter, N. L., & Nurko, S. (2016). Childhood functional gastrointestinal disorders: Child/adolescent. Gastroenterology, 150(6), 1456–1468. https://doi.org/10.1053/j.gastro.2016.02.016
• van Engelenburg-van Lonkhuyzen, M. L., Bols, E. M., Benninga, M. A., Verwijs, R. F., & de Bie, R. A. (2017). Bladder and bowel dysfunction in children: Development and reliability of the Childhood Bladder and Bowel Dysfunction Questionnaire (CBBDQ). Journal of Pediatric Urology, 13(4), 384.e1–384.e8. https://doi.org/10.1016/j.jpurol.2017.02.020
• van Engelenburg-van Lonkhuyzen, M. L., Bols, E. M., Benninga, M. A., Verwijs, R. F., & de Bie, R. A. (2018). Construct validity and responsiveness of the Childhood Bladder and Bowel Dysfunction Questionnaire (CBBDQ). Neurourology and Urodynamics, 37(8), 2824–2832. https://doi.org/10.1002/nau.23793
• van Gontard, A., Baeyens, D., Van Hoecke, E., Kuhn, S., & Bauer, S. B. (2011). Psychological and psychiatric issues in urinary and fecal incontinence. The Journal of Urology, 185(4), 1432–1436. https://doi.org/10.1016/j.juro.2010.11.051

Items of the Scale