Neoplasms

Digestive System Diseases

All Conditions

Colorectal Neoplasms

Intestinal Neoplasms

Gastrointestinal Neoplasms

Digestive System Neoplasms

Gastrointestinal Diseases

Colonic Diseases

Intestinal Diseases

Rectal Diseases

Invitation letter and reminder letter to screening colonoscopy

Telephone recruitment by motivational conversation and colonoscopy appointment

Non responders to invitation and reminder letter will be recruited by telephone conversation

Utilisation of dedicated call center for recruitment to screening program instead of traditional, paper invitation

Telephone recruitment to screening colonoscopy

Utilisation of dedicated call center for recruitment to screening program in participants, who did not respond to traditional, paper invitation

Combined methods recruitment to screening colonoscopy

Marek Bugajski, PhD

Małgorzata Pisera

A multicentre randomized health services study within the population-based primary colonoscopy screening program (PCSP) in Poland. Individuals, aged 55-60 years, willl be randomized in a 1:1:1 ratio to arms: (1) Invitation by post, (2) Call Center or (2) Combined invitation methods. The primary outcome measure is rate of participation in screening colonoscopy. The sample size of 6 300 participants will detect 3 to 5 percentage point differences (depending on the arms comparison) in participation rate between groups with 80% power and significance level 0.05, using Ochran-Mantel-Haenszel test.

This randomized health services study will be performed within national population-based screening program (PCSP) in Poland, including its population, infrastructure and database system.

Individuals aged 55-64 years old, included in PCSP willl be randomly assigned (in 1:1:1 ratio, stratified by gender, age, place of residence) to study arms and invited to screening colonoscopy to local PSCP centers.

Invitation process by post in Control group (1) and partially in Combined group (3) - will be performed by coordinating PCSP center (practice as usual).

Recruitment by telephone conversation in Call Center group (2) and partially in Combined group (3) - will be performed by Screening Up call center company. Colonoscopies will be performed in 6 selected PCSP centers.

The sample size of 2,100 participants per group (350 participants from each group in each center, assuming 5% drop out and access to telephone numbers of 30% participants in relevant arms; calculation is based on a 95% confidence interval +/- 5% error probability) was calculated to detect a difference in participation rate of 15% in control group (based on PCSP participation rate in 2019) vs. 18.7% in Call Center group vs 25% in Combined Invitation group (0.025 significance level with 80% power). The difference was calculated for the Cochran-Mantel-Haenszel test, assuming that the initial reporting in the control group will be as high as it was in 2019.

Differences in participation rate to screening colonoscopy between the study groups and the control group will be performed using Ochran-Mantel-Haenszel test (two-sided analysis), taking into account initial differences between rates at the significance level of 0.05.

The Principal Investigator of the study asked the Bioethical Committee with a request to release participants from signing of informed consent form to participation in the study, as they take part in a nationwide PSCP, financed by Ministry of Health in Poland - the study character is the Randomized Health Services Study.

Telephone Services for Participation in Colorectal Cancer Screening

Telephone Services for Participation Improvement in Colorectal Cancer Screening: a Randomized Health Services Study

The percentage of study participants who underwent screening colonoscopy relative to all PCSP participants to whom the invitation was sent in a given group during the observation period (intention-to-screen analysis)

Study title	NCT ID	Conditions	Interventions	Eligibility	Organization	Link
Telephone Services for Participation in Colorectal Cancer Screening	NCT04348058	Participation R...	Telephone recru... Combined method...	55 Years - 64 Years	Maria Sklodowska-Curie National Research Institute of Oncology
Telephone Services for Participation in Colorectal Cancer Screening	NCT04348058	Participation R...	Telephone recru... Combined method...	55 Years - 64 Years	Maria Sklodowska-Curie National Research Institute of Oncology

Spots Global Cancer Trial Database for telephone recruitment to screening colonoscopy