Data Sheet 1_The patient-doctor relationship questionnaire (PDRQ-9). An overview of 20 yea

66 studies from up to 24 countries, published between 2004 and 2025, form the basis of this systematic review of the Patient-Doctor Relationship Questionnaire (PDRQ-9). Authored by Christina Maria Van Der Feltz-Cornelis and shared in 2026, the review synthesizes psychometric findings, proposes a novel scoring method, and recommends cut-off values for interpreting relationship quality.

Use Cases

• Benchmarking patient-doctor relationship scores based on the proposed normalized T-score cut-offs.
• Validating survey translation and adaptation based on psychometric findings from 25 studies in 15 languages.
• Analyzing the factor structure of relationship questionnaires based on the one-dimensional structure reported in 13 of 14 studies.
• Investigating correlations between relationship quality and patient outcomes like understanding of illness and treatment adherence, as mentioned in the discussion.

Strengths

• Analysis is based on a systematic review of 66 peer-reviewed studies, providing a broad evidence base.
• Includes proposed standardized scoring and cut-off values (T ≤ 44, 45-56, >56) for interpreting results.
• Covers research from up to 24 countries and 15 language adaptations, suggesting international relevance.

Limitations

• The primary data file is a 633.1 KB PDF; the underlying raw survey data from the 66 studies is not included.
• The review notes a ceiling effect in scores and that most samples were convenience samples, which may limit generalizability.
• Column-level documentation for any potential aggregated data tables is absent; data structure must be inferred from the text.

Provenance

Source

Christina Maria Van Der Feltz-Cornelis via figshare.

Collection Method

Systematic literature review from PubMed/Medline/Web of Science/Google Scholar.

Time Range

Studies published from March 2004 to November 2025.

Freshness

Last updated 2026-03-17 13:08:27.

Geography

Studies conducted in up to 24 countries.