- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT05215678
Characteristics of Patients Declining INKA Trial Participation (n-INKA)
Generalizability of Overweight Patients With Knee Osteoarthritis Awaiting Knee Surgery Accepting to Join a Weight Loss Randomized Trial: Protocol for a Cross-sectional Study Comparing Baseline Characteristics and Propensity of Patients Accepting/Declining Enrolment
Study Overview
Status
Conditions
Intervention / Treatment
Study Type
Enrollment (Actual)
Contacts and Locations
Study Locations
-
-
-
Copenhagen, Denmark, 2000
- The Parker Institute, Frederiksberg Hospital
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Sampling Method
Study Population
All patients found eligible in INKA study (inclusion criteria for INKA (NCT05172843) and accepting and declining enrolment in the INKA study are invited to participate in our study.
Study participants will be adults (i.e. at least 18 years old), have a diagnosis of knee osteoarthritis with an indication for primary knee arthroplasty (unicondylar or total arthroplasty), and be obese (BMI≥30 kg/m2).
Description
Inclusion Criteria:
- Age 18 or more
- A clinical and radiological diagnosis of knee OA
- BMI ≥ 30 kg/m2
- Motivated for weight loss as by the provided program
- Signed informed consent.
Exclusion Criteria:
- The scheduled surgery is for revision of an existing prosthesis
- Planned surgery for more than one knee within the observation period
- KA indication due to sequelae of fracture(s)
- Injection of medication or substances in the target knee within 3 months prior to participation
- Immuno-inflammatory arthritis as cause of the knee OA
- Current systemic treatment with glucocorticoids equivalent to > 7.5 mg of prednisolone/day
- Previous or planned obesity surgery
- Inability to understand or read Danish incl. instructions and questionnaires
- Any other condition or impairment that, in the opinion of the investigator (or his/her delegate), makes a potential participant unsuitable for participation or which obstruct participation.
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
INKA participants
Individuals eligible and accepting participation in the INKA trial (NCT05172843)
|
Individuals who are eligible for and accept participation in the INKA trial (NCT05172843)
|
n-INKA participants
Individuals eligible and declining participation in the INKA trial (NCT05172843)
|
Individuals who are eligible for participation in the INKA trial (NCT05172843) but decline the invitation to participate
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Oxford knee score
Time Frame: Baseline
|
The Oxford Knee Score (OKS) is a 12-item Patient Reported Outcome questionnaire developed specifically to assess the patient's perspective on the outcomes of knee arthroplasty (KA) with respect to combined pain and physical function.
Standardized answer options are given (5 Likert boxes) and each question is assigned a score from 0 to 4. Thus, a total score is calculated that ranges from 0 and 48, with 48 indicating the best outcome.
|
Baseline
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Health outcome and quality of life survey (EQ-5D-5L)
Time Frame: Baseline
|
EQ-5D-5L is a standardized patient-reported instrument for use as a measure of health outcome and quality of life. EQ-5D-5L is designed for self-completion by respondents and is ideally suited for use in surveys. The EQ-5D-5L consists of a descriptive system and the EQ Visual Analogue scale (EQ VAS). The descriptive system comprises 5 dimensions (mobility, self-care, usual activities, pain/discomfort, and anxiety/depression). Standardized answer options are given (5 Likert boxes) and each question is assigned a score from 1 to 3. It is simple, taking only a few minutes to complete. Instructions to respondents are included in the questionnaire. The EQ-5D VAS records the respondent's self-rated health on a 20 cm vertical, visual analogue scale with endpoints labelled 'the best health you can imagine' and 'the worst health you can imagine'. |
Baseline
|
Analgesic use
Time Frame: Baseline
|
At clinical outcome assessment visit, the participants will be interviewed by an investigator about their use of analgesics since last visit. The interview will be focused on intake of
|
Baseline
|
The Knee Injury and Osteoarthritis Outcome Score - 12 item short form (KOOS-12)
Time Frame: Baseline
|
KOOS-12 provides scale scores for knee-specific Pain, Function and QOL, along with a summary measure of overall knee impact. Each item is scored from 0 to 4, with 0 representing no knee problems and 4 representing extreme knee problems. The separate KOOS-12 Pain, Function and QOL scale scores are calculated, in which item responses are summed. The KOOS-12 Summary knee impact score is calculated as the average of the KOOS-12 Pain, KOOS-12 Function and KOOS-12 QOL scale scores. A Summary impact score is not calculated if any of the three scale scores are missing. The KOOS-12 Summary impact score also ranges from 0 to 100, where 0 is the worst possible and 100 is the best possible score. |
Baseline
|
Patient's global assessment of impact of the knee in daily life (PGA)
Time Frame: Baseline
|
The participant's assessment of the impact of their knee on everyday life is measured as the response to the question "Taking into account all the activities you have during your daily life, your level of pain, and your functional impairment, how much does your [left/right] knee impact your daily life?".
A 100 mm visual analogue scale (VAS) will be used as assessment instrument with anchors: 0 = "No impact" and 100 = "Worst imaginable impact".
|
Baseline
|
Body weight
Time Frame: Baseline
|
The participants body weight is transferred from the medical records of their visit in the orthopaedic outpatient clinic.
|
Baseline
|
Brief Illness perception questionnaire (B-IPQ)
Time Frame: Baseline
|
B-IPQ is a generic 9-item questionnaire developed to rapidly assess the cognitive and emotional representations in a variety of illnesses.
B-IPQ is a short version of the 84-item revised illness perception questionnaire (IPQ-R) (21).
B-IPQ assesses perceptions on the following five dimensions: Identity, Cause, Timeline, Consequences and Cure-Control.
Five of the items assess cognitive illness representations; two of the items assess emotional representations; and one item assesses illness comprehensibility.
The 8 items are scored on a 0-3 Likert scale with descriptors (none or extreme) at either end.
|
Baseline
|
Collaborators and Investigators
Sponsor
Investigators
- Study Chair: Søren Overgaard, DMSc, Bispebjerg Frederiksberg Hospital
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Estimated)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- N-INKA
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
IPD Plan Description
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
Clinical Trials on Knee Osteoarthritis
-
LifeBridge HealthMicroPort Orthopedics Inc.; Rubin Institute for Advanced OrthopedicsRecruitingKnee Osteoarthritis | Osteoarthritis, Knee | Knee Pain Chronic | Arthropathy of Knee Joint | Knee Disease | Osteoarthritis Knees Both | Osteoarthritis Knee Left | Osteoarthritis Knee RightUnited States
-
University Hospital, Clermont-FerrandSanofiCompletedKnee Osteoarthritis (Knee OA)France
-
Joseph E. BroylesCompletedDegenerative Lesion of Articular Cartilage of Knee | Degeneration; Articular Cartilage, Knee | Unilateral Primary Osteoarthritis of Knee | Osteoarthritis Knee
-
Jiangsu XinChen-Techfields Pharma Co., LTD.Completed
-
The Hong Kong Polytechnic UniversityCompleted
-
Federal University of São PauloCompletedKNEE OSTEOARTHRITISBrazil
-
Tianjin XinChen-Techfields Pharma Co., LTD.Completed
-
Eun Jung KimMinistry of Health & Welfare, Korea; Semyung UniversityUnknownOsteoarthritis KneeKorea, Republic of
-
Novartis PharmaceuticalsRecruitingSymptomatic Knee OsteoarthritisUnited States, Spain, Hungary, Argentina, Germany, Slovakia, Czechia, Belgium, Romania
-
University of BathUniversity of Oxford; 3D Metal Printing Ltd; Versus ArthritisRecruitingMedial Knee OsteoarthritisUnited Kingdom
Clinical Trials on Acceptance of invitation to trial participation
-
Ain Shams UniversityUnknownBreast Cancer | Clinical TrialsEgypt
-
Norwegian Institute of Public HealthNot yet recruiting
-
Medical University of WarsawDepartment of Anesthesiology and Intensive Care, Czerniakowski Hospital,... and other collaboratorsCompleted
-
International Agency for Research on CancerEnrolling by invitation
-
Matthew SouthwardNational Institute of Mental Health (NIMH)RecruitingDepression | Obsessive-Compulsive Disorder | Anxiety | Borderline Personality Disorder | Posttraumatic Stress Disorder | Eating Disorders | Emotional RegulationUnited States
-
Sunnybrook Health Sciences CentreCancer Care OntarioCompleted
-
University Hospital Inselspital, BerneUniversity of Zurich; University Hospital, Geneva; Luzerner Kantonsspital; Ente... and other collaboratorsNot yet recruiting
-
University of ThessalyCompletedSprint TrainingGreece
-
VA Office of Research and DevelopmentRecruiting
-
Sengkang General HospitalUniversiti Putra Malaysia; University of Malaya; Khoo Teck Puat Hospital; Singapore... and other collaboratorsRecruitingDiabetes Mellitus | Diabetes Complications | FastingSingapore