Recruiting · registry statusA brief test of planning and thinking skills
This study checks an assessment designed to identify difficulties with organising, planning and controlling actions in Parkinson's.
Learning by observing or collecting information · Study reference: DRKS00030791
Plain-language introduction written with AI from the registry; not independently checked by a clinician. Read the original details below ↓
This registry record was last updated over six months ago, or its update date is missing. Recruitment may have changed. Confirm with the team before making plans.
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Looking for volunteers
- Start (reported date)
- 2022-12-01
Planned dates can move. A study finishing does not tell us when a paper will be published.
No results summary has been confirmed in the registry records we imported. See connected papers below; we keep checking after recruitment ends.
Changes we have recorded
These are dates we observed a change, not necessarily the dates it happened.
Papers connected to this study
No connected paper has been found yet. The tracker checks the growing library for study identifiers and registry-linked publications.
Who can join?
Ages 18 years to 90 years · Ask the team who can join
These are starting points, not the full rules. The research team can tell you whether the study is right for your situation.
Read all the rules for taking part
Sex eligibility reported by registry: all
Inclusion criteria: Patients:
- Only patients with IPS from the Department of Neurology who present to the Department of Neurology as part of routine clinical care or those who are hospitalized there if necessary for clinical indication.
- Male, female and diverse
- 18-90 years
- Unimpaired or sufficiently corrected (glasses, hearing aid, etc.)
- Sufficient knowledge, adequate speech
- No other clinically relevant neurological disease besides IPS.
- No parkinsonism of non-idiopathic form.
- No moderate or severe medical conditions that interfere with the ability to complete the survey.
- No known substantial impairments.
- Consented and signed
Control subjects:
- Individuals who do not have court-ordered supervision.
- Male, female, diverse
- 18-90 years of age
- Unimpaired or sufficiently corrected (glasses, hearing aid, etc.)
- Sufficient language skills
- No neurological or psychiatric conditions or other moderate or severe conditions that interfere with ability to complete the survey.
- No known impairments
- Consented and signed
Exclusion criteria: Patients:
- Possible subjects dependent on the study investigators.
- 90 years
- Limited
- Insufficient language skills, substantial language impairment.
- Other clinically relevant neurological disease besides IPS.
- Parkinsonism of non-idiopathic form.
- Moderate or severe disease that interferes with ability to complete the survey.
- Known substantial impairment.
- Not consented, not signed.
Control subjects:
- Individuals who have court-ordered supervision;
- Potential subjects dependent on the study investigators.
- 90 years of age
- Limited language skills
- Neurological or psychiatric illness or other moderate or severe illness that interferes with ability to complete the survey.
- Substantial impairment
- Not consented, not signed
Full study name & original research details
Official study title
The Cologne Executive Assessment (KEX): Validation of a screening tool for executive dysfunction in patients with Idiopathic Parkinson's Disease
Original description
Intervention:
Group 1: The target group consists of patients with IPS who present to the clinic as part of routine clinical practice or those who are hospitalized there if necessary for clinical reasons. Control subjects will be randomly selected from the general population. They must not have a CNS disease leading to neuropsychiatric impairment or any other cognitive impairment. All study participants must provide written informed consent.
Primary outcome:
The aim of the study is to validate the KEX Cologne Executive Test with established neuropsychological procedures and to test its sensitivity and specificity using a clinical population with prominent executive disorders (Parkinson's patients).
The collected data will be statistically analyzed using the statistical program IBM SPSS Statistics 27. Descriptive statistics (mean, standard deviation, etc.) are calculated to reflect the characteristics of the sample. The quality of the patients'/control subjects' data is determined using standard values (missing data 90%; floor and ceiling effects [standard < 16%]; skewness [standard -1 to +1]). In addition, item analysis (item difficulty, item homogeneity, and item discriminant power) is performed and the reliability of the subtests (Cronbach's alpha) is calculated. Statistical procedures used also include the t-test for independent samples for comparison between healthy controls and patients and correlation analyses (Spearman/Pearson correlation coefficients) between the subtests of the KEX and the corresponding already validated tests to determine convergent and divergent validity. Receiver operating characteristic (ROC) curves will also be used to determine cut-off values as well as sensitivity and specificity of the KEX.
Another aim of the study, in addition to the evaluation of the KEX, is the validation of the cognitive test EVA (Executive Functions, Verbal Fluency, and Recall). The study aims to examine the reliability, validity, sensitivity, and specificity of the test in a clinical sample of patients with executive dysfunctions (patients with Parkinson’s disease).
Secondary outcome:
Correlations with established test procedures
Conditions reported: G20;Parkinson disease
Registry records for this study
Records are joined using registration identifiers. Titles alone do not establish that two studies are the same.
- Study type
- Observational
- Interventions
- Group 1: The target group consists of patients with IPS who present to the clinic as part of routine clinical practice or those who are hospitalized there if necessary for clinical reasons. Control subjects will be randomly selected from the general population. They must not have a CNS disease leading to neuropsychiatric impairment or any other cognitive impairment. All study participants must provide written informed consent.
- Phases
- Not reported
- Sponsor
- Universitätsklinikum Köln
- Start date reported by registry
- 2022-12-01 (reported)
Registry updated: Not reported · Status last verified by the registry submitter: Not reported
Registry records retrieved 2026-10-14 (UTC). Individual records may have older updates. Recruitment and eligibility must be confirmed with the study team.
Contact the research team
Public study contacts supplied to the registry. Ask whether recruitment is still open and what participation involves.
Stefanie Jost · +492214784011 · Stefanie.Jost@uk-koeln.de
Study locations
Site status can differ from overall study status. “Status not reported” means local availability needs confirmation. Remote participation and travel arrangements must be checked with the team.
Facility not reported
Germany
Status not reportedThe original descriptions and participation rules come from the registry. Participation is voluntary and does not guarantee benefit.