Clinical trial · Interventional
Time Schedules for Sending Invitations to Colonoscopy Screening
- Source
- ClinicalTrials.gov
- Retrieved
- Sep 8, 2026
- Layer
- normalized (units and labels harmonized; values unchanged)
- Run
- ING-CLINICALTRIALS-20260908-000001
Summary
Brief summary (as posted)
The attendance rate to population based primary screening colonoscopy within NordICC trial (The Nordic-European Initiative on Colorectal Cancer, NCT00883792) in Poland is roughly 33%. The aim of this study is to compare the effect of two different time schedules for sending invitations and reminding letters to a pre-specified colonoscopy appointment. 1,600 screening naive men and women 55 to 64 years of age are randomly assigned in a 1:1 ratio to receive invitation and reminder 6 and 3 weeks (SIX and THREE group) or 4 and 2 weeks (FOUR and TWO group) prior to pre-specified screening colonoscopy appointment date. Outcome measures are participation in screening colonoscopy within 6 months from the date of invitation, response and acceptance rate before sending a reminder. The study is powered to detect 7% difference in participation in screening colonoscopy.
Conditions
Conditions (1)
Free-text conditions as registered, with the CancerIndex entity they were reconciled to and the match type.
| Condition (as posted) | Mapped entity | Match | Confidence |
|---|---|---|---|
| Colorectal Cancer | Malignant Colorectal Neoplasm | CURATED_BROADER | 0.80 |
Interventions
Interventions (2)
| Intervention | Type | Mapped drug | Match |
|---|---|---|---|
| Four and two time schedule | Other | — | UNRESOLVED |
| Six and three time schedule | Other | — | UNRESOLVED |
Design
Arms and outcomes
Arms (2)
- type
- EXPERIMENTAL
- label
- Six and three time schedule
- interventionNames
- Other: Six and three time schedule
- type
- EXPERIMENTAL
- label
- Four and two time schedule
- interventionNames
- Other: Four and two time schedule
Primary outcomes (1)
- measure
- Participation rate
- timeFrame
- 6 months from the date of sending invitation letter
- description
- Percentage of attenders to screening colonoscopy.
Secondary outcomes (4)
Eligibility
Eligibility (as posted)
- Sex
- All
- Minimum age
- 55 Years
- Maximum age
- 64 Years
Show eligibility criteria text
Inclusion criteria: Individuals aged 55-64 years living in Warsaw area randomly drawn from Population Registry and randomized to the screening arm of the NordICC trial. Exclusion criteria: * Resident abroad * Return of unopened letter of invitation and/or reminder (address unknown) * Message from neighbour/family/post office on death of screenee (not updated in Population Registry). Exclusion criteria for colonoscopy: * Individuals with previous colorectal surgery (resections, enterostomies) * Individuals in need of long-lasting attention and nursing services (somatic or psychosocial, mental retardation). * On-going cytotoxic treatment or radiotherapy for malignant disease * Severe chronic (longer than trial duration) cardiac (NYHA III-IV)or lung disease * Lifelong anticoagulant therapy with Warfarin * A coronary event requiring hospitalization during the last 3 months * A cerebrovascular event during the last 3 months
References
Publications (0)
Data not yet available