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Revised Denver Prescreening Developmental Questionnaire (R-PDQ)
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About Revised Denver Prescreening Developmental Questionnaire (R-PDQ)
Scale Name
Revised Denver Prescreening Developmental Questionnaire (R-PDQ)
Author Details
William K. Frankenburg and colleagues (Denver Developmental Materials, University of Colorado Medical Center)
Translation Availability
English
Background/Description
The Revised Denver Prescreening Developmental Questionnaire (R-PDQ) is a brief, parent-completed developmental prescreening tool designed to identify children at risk of developmental delays prior to conducting the full Denver Developmental Screening Test (DDST or the revised DDST-II). As a prescreening instrument, the R-PDQ aims to reduce the time and resources needed for comprehensive developmental assessments by filtering out children whose developmental progress appears typical.
The R-PDQ includes a series of age-specific questions asked from parents or primary caregivers. These questions are derived from the core developmental domains of the Denver Screening system—including personal-social, fine motor-adaptive, language, and gross motor skills. The child’s age determines which items are selected, allowing a quick and efficient determination of whether development aligns with expected milestones.
The questionnaire significantly streamlines the workflow in pediatric care settings, community clinics, and early childhood programs. If a child’s responses raise developmental concerns, a full Denver developmental assessment is recommended. As a caregiver-report measure, the R-PDQ increases accessibility by allowing screening even when specialist assessors are not immediately available. It is particularly useful for large-scale developmental surveillance, early detection, and referral planning within public health and clinical contexts.
Administration, Scoring and Interpretation
- Obtain the Copy: Secure the official R-PDQ form from authorized Denver Developmental Materials or validated sources.
- Explain the Purpose: Inform caregivers that the tool is designed to prescreen for possible developmental delays in children across multiple developmental domains.
- Provide Instructions: Parents/caregivers answer age-appropriate questions based on their child’s typical daily behaviors and abilities. Clarify that honest responses support accurate developmental monitoring.
- Approximate Time: Administration typically requires 5–10 minutes, depending on the age-specific set of questions.
- Administer the Scale:
- Identify the child’s exact age to determine the question set.
- Caregivers mark “yes” or “no” for each milestone question.
- Clinician reviews flagged concerns and determines whether further evaluation (e.g., DDST-II) is required.
Reliability and Validity
- Research has shown that the R-PDQ is an effective prescreening extension of the Denver developmental system:
- Demonstrates good sensitivity for identifying children who may require full developmental screening.
- Validity is supported through its derivation from the DDST items, which have been widely normed, tested, and validated across thousands of children in diverse populations.
- Studies indicate that the R-PDQ reduces the need for full screenings by approximately 40–50% while maintaining appropriate clinical detection rates.
- Reliability is strengthened by the nature of caregiver-reported milestones, which tend to be stable and observable, though the tool is not a substitute for direct assessment.
- The prescreening format improves feasibility and public health utility, especially in large population-based developmental monitoring programs.
Available Versions
Multiple-Items
Reference
Frankenburg, W. K. (1996). Denver II: technical manual. Denver Developmental Materials, Incorporated.
Important Link
Scale File:
Frequently Asked Questions
Q1: What is the purpose of the R-PDQ?
It serves as a quick prescreening tool to identify children who may need a full developmental assessment using the Denver Developmental Screening Test.
Q2: Who completes the R-PDQ?
Parents or primary caregivers complete it based on their child’s behavior and developmental skills.
Q3: At what ages can the R-PDQ be used?
It is designed for children from birth through 6 years of age, consistent with Denver developmental milestones.
Q4: Does the R-PDQ diagnose developmental delay?
No. It only identifies whether a full developmental evaluation is needed.
Q5: How long does the questionnaire take?
Typically 5–10 minutes, depending on the age-based question set.
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