Development of a depression diagnosis questionnaire in general practices - A feasibility study

Development of a depression diagnosis questionnaire in general practices - A feasibility study - Feasibility study questionnaire

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

DRKS

Registry ID

DRKS00028950

Enrollment

300

Registered

2022-05-31

Start date

2022-03-27

Completion date

Unknown

Last updated

2025-04-07

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

F32 F33

Interventions

Group 1: This is a multicenter cross-sectional study with a single survey of general practitioners and their patients. The study serves as a preliminary study to assess the questionnaire structure of

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: Patients who meet the following criteria will be included in the study: - Visit to a general practititoner's practice with planned personal contact with a general practitioner - Age over 18 years - Sufficient knowledge of German - Written informed consent to participate in the study In addition, the general practitioners who complete the depression questionnaire for the assessment of the patient should meet the following criteria: - General practitioners (specialists in general medicine or internal medicine or general practitioners). - General practitioners have their own practice - Predominantly primary care

Exclusion criteria

Exclusion criteria: - Patient not capable of giving consent - Patient does not have sufficient knowledge of the German language

Design outcomes

Primary

Measure	Time frame
The structure of the questionnaire for the diagnosis of depression in general practices will be reviewed. For this purpose, a consecutive inclusion of at least 200 patients and, in case of good recruitment, a maximum of 400 patients in approx. 5-10 general practices will take place. Use of the questionnaire battery with patients and general practitioners. An item analysis (raw score distribution, item difficulty, discriminatory power, homogeneity and dimensionality), as well as a factor analysis to identify the factor structure will be performed. In addition, potentials for improvement will be identified.	—

Measure

Time frame

The structure of the questionnaire for the diagnosis of depression in general practices will be reviewed. For this purpose, a consecutive inclusion of at least 200 patients and, in case of good recruitment, a maximum of 400 patients in approx. 5-10 general practices will take place. Use of the questionnaire battery with patients and general practitioners. An item analysis (raw score distribution, item difficulty, discriminatory power, homogeneity and dimensionality), as well as a factor analysis to identify the factor structure will be performed. In addition, potentials for improvement will be identified.

—

Secondary

Measure	Time frame
A comparison of the new questionnaire for depression diagnostics in general practices with the PHQ-9 (convergent validity) and the other validated questionnaires takes place.	—

Countries

Germany

Contacts

Public ContactClara Teusen

Institut für Allgemeinmedizin und Versorgungsforschung

clara.teusen@mri.tum.de089614658927

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Feb 4, 2026