Comparing Use of Radiographs Versus Patient Empowerment (CURVE)
CURVE
"The (Cost-)Effectiveness of a Patient Empowered Protocol Without Routine X-rays for Follow-up of Adolescent Idiopathic Scoliosis Patients; A Pragmatic Randomized Trial"
1 other identifier
interventional
812
1 country
23
Brief Summary
Objective: To evaluate the (cost-)effectiveness of a new patient-empowered follow up (FU) protocol in patients with Adolescent idiopathic Scoliosis (AIS) that is based on patient-reported outcome measures (PROMs), self-assessment tools and physical examination, which is compared to standard FU care by: 1) Effect evaluation, 2) Economic evaluation, 3) Implementation (process) evaluation. Study design: A multicentre pragmatic randomized trial design with two arms, combined with a patient preference cohort for each arm (partially randomized preference trial \[PRPT\]). Study population: A total of 812 AIS patients (age 10-18 years) treated by the Dutch AIS Consortium, representing the scoliosis treatment centres in the Netherlands, will be included. Three subgroups of AIS patients are distinguished, which are monitored over two years:
- 1.Pre-treatment group: adolescents with curve 10-25° (n=132 per arm; total n=264)
- 2.Post-brace treatment group (n=122 per arm; total n=244)
- 3.Post-surgery group (n=152 per arm; total n=304)
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for not_applicable
Started Jul 2022
Longer than P75 for not_applicable
23 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
May 6, 2022
CompletedFirst Posted
Study publicly available on registry
May 18, 2022
CompletedStudy Start
First participant enrolled
July 17, 2022
CompletedPrimary Completion
Last participant's last visit for primary outcome
December 31, 2025
CompletedStudy Completion
Last participant's last visit for all outcomes
December 31, 2025
CompletedNovember 18, 2023
November 1, 2023
3.5 years
May 6, 2022
November 17, 2023
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
The proportion of radiographs that has led to treatment consequences
the proportion will serve as an indication of the sensitivity of the new PE-FU protocol and standard FU protocol. The number of x-rays that has led to treatment will be divided by the total number of x-rays in each subgroup to calculate the primary outcome.
24 months
Secondary Outcomes (12)
The safety of the standard and the new protocol
for pre-treatment and the post-brace group at 6, 12,18 and 24 months and for the postsurgery group at 3,12 and 24 months
The specificity, negative predictive value and positive predictive value of the standard and new patient empowered follow up protocol.
24 months
The change in readiation exposure
24 months
Participants perspective: Numeric pain rating scale [NPRS 0-10]
24 Months
Participants perspective: condition-specific quality of life [SRS-22r]
24 months
- +7 more secondary outcomes
Study Arms (2)
Standard follow-up
OTHERstandard care during follow-up
Patient-empowered follow-up
EXPERIMENTALInterventions
The patient-empowered follow-up protocol consists of patient-reported outcome measures (PROMs), self-assessment tools and clinical assessment including physical examination. Radiographs will only be taken when progression of the scoliosis (curve progression) or postoperative complications are suspected based on test results and based on the criteria of so called 'sense of alarm'. Note: Sense of alarm ('niet pluis') is based on any deterioration on the above-mentioned PROMs, self-assessment tool, and clinician-based measurement instruments, which is a signal for the treating physician to consider when a radiograph is appropriate. Sense of alarm is described as any other concern by the orthopaedic surgeon, parent or child which warrants a radiograph. For both the Bunnell Scoliometer (clinical assessment tool) and the Scolioscoop (patient self-assessment tool) a threshold of ≥4° is used.
Routine radiographs are taken at each follow up visit during standard care (to detect possible curve progression or rule out postoperative complications).
Eligibility Criteria
You may qualify if:
- Patients with adolescent idiopathic scoliosis (AIS).
- Age: 10-18 years old.
- Patients scheduled for follow up in one of the participating centres.
- Understanding of the Dutch language.
- Signed informed consent.
- Biplanar (Posterior-Anterior \[PA\] and Lateral) full-spine x-rays within the last 3 months.
- Specifically for the pre-treatment group:
- Girls aged ≤14 years (i.e. 10-14 years) and boys \<16 years (i.e. 10-15 years). These patients still have generally 2 years of remaining skeletal growth. Patients above this age with a curve below 25 degrees have a limited risk for progression
- Girls: pre-menarche up to 6 months post-menarche (to estimate end of growth)
- A primary coronal curve of 10-25 degree.
- Specifically for the post-brace group:
- Patients aged 12-18 years
- Within 3 months after termination of brace treatment
- Minimum of 6 months of brace treatment
- Specifically for the post-surgery group:
- +1 more criteria
You may not qualify if:
- Patients with juvenile or infantile idiopathic scoliosis with the diagnosis of onset under the age of 10.
- Patients who are undergoing brace treatment. These patients are not included because of the need to monitor brace therapy with radiographs.
- Patients who have undergone previous spinal surgery and are undergoing revision surgery.
- Skeletally mature patients.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- Radboud University Medical Centerlead
- ZonMw: The Netherlands Organisation for Health Research and Developmentcollaborator
- Trialbureau Zorgevaluatie Nederlandcollaborator
- Nederlandse Orthopaedische Verenigingcollaborator
- Vereniging Scoliose Patiëntencollaborator
- Dutch Adolescent Idiopathic Scoliosis (AIS) Consortiumcollaborator
Study Sites (23)
Isala
Zwolle, Drenthe, 8025AB, Netherlands
Flevo ziekenhuis
Almere Stad, Flevoland, 1315RA, Netherlands
Rijnstate
Arnhem, Gelderland, 6815 AD, Netherlands
St Jansdal
Harderwijk, Gelderland, 3844 DG, Netherlands
Maastricht UMC+
Maastricht, Limburg, 6229HX, Netherlands
Viecuri
Venlo, Limburg, 5912, Netherlands
Sint Maartenskliniek
Boxmeer, North Brabant, 5835 DV, Netherlands
Amphia
Breda, North Brabant, 4818CK, Netherlands
ETZ Elisabeth
Tilburg, North Brabant, 5022GC, Netherlands
Noordwestziekenhuis groep
Alkmaar, North Holland, 1815JD, Netherlands
OLVG
Amsterdam, North Holland, 1091AC, Netherlands
Amsterdam UMC
Amsterdam, North Holland, 1105AZ, Netherlands
Spaarne Gasthuis
Haarlem, North Holland, 2035 RC, Netherlands
Dijklander
Hoorn, North Holland, 1624NP, Netherlands
Albert Schweitzer ziekenhuis
Dordrecht, South Holland, 3318 AT, Netherlands
Groene Hart ziekenhuis
Gouda, South Holland, 2803HH, Netherlands
Leiden UMC
Leiden, South Holland, 2333ZA, Netherlands
Erasmus MC
Rotterdam, South Holland, 3015GD, Netherlands
Maasstad ziekenhuis
Rotterdam, South Holland, 3079 DZ, Netherlands
Juliana kinderziekenhuis
The Hague, South Holland, 2545 AA, Netherlands
Meander
Amersfoort, Utrecht, 3813TZ, Netherlands
UMC Groningen
Groningen, 9713, Netherlands
UMC Utrecht
Utrecht, 3584 CX, Netherlands
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Miranda L van Hooff, PhD
Radboud University Medical Center
- PRINCIPAL INVESTIGATOR
Marinus de Kleuver, MD, PhD
Radboud University Medical Center
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- SINGLE
- Who Masked
- OUTCOMES ASSESSOR
- Purpose
- HEALTH SERVICES RESEARCH
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
May 6, 2022
First Posted
May 18, 2022
Study Start
July 17, 2022
Primary Completion
December 31, 2025
Study Completion
December 31, 2025
Last Updated
November 18, 2023
Record last verified: 2023-11