Online Study of Colorectal Cancer and Prostate Cancer Screening Decision Making (CARR2)

University of North Carolina (UNC)

Status: Completed

Conditions: Colon Cancer; Prostate Cancer; Colorectal Cancer

Treatments: Other: Rating and Ranking Task; Other: Discrete Choice Task; Other: Balance Sheet Task

Study type: Interventional

Funder types: Other

Identifiers

NCT01558583

UCRF-CARR2-11-0861

Details and patient eligibility

About

Participants will be recruited from the United States and Australia to take an online survey about colon cancer screening or prostate cancer screening. Individuals selected for both the prostate cancer survey and the colon cancer study will be randomized to take one of three survey types - balance sheet, rating and ranking or conjoint analysis. These surveys will help participants clarify their values and opinions about screening options for colon cancer or prostate cancer. Participants' responses to the online survey are measured at one point in time - the time at which the participant takes the survey.

Full description

This study will compare effect of a conjoint analysis based values clarification exercise, ranking and rating, and a balance sheet on screening test preferences for colorectal cancer screening and prostate cancer screening using online surveys. Recruitment will be conducted through Survey Sampling International (SSI), an online survey research firm. Participants will be randomized to one of three arms to take online surveys. Patients will complete either a conjoint analysis task, in which they will be asked to make a series of choices between hypothetical screening testing strategies with different attributes; a rating and ranking task for these same attributes; or they will make a choice after viewing a balance sheet of attributes.

Enrollment: 1,831 patients

Sex: All

Ages: 50 to 75 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Colorectal cancer

  • men and women, ages 50-75, who can speak and read English.

• Prostate cancer screening

  • men, ages 50-75, who can speak and read English.

Exclusion criteria

• Colorectal Cancer

  • individuals with a previous personal or family history of colon cancer, personal history of polyps, or inflammatory bowel disease will be excluded.

• Prostate cancer

  • individuals with a previous personal or family history of prostate cancer will be excluded

Trial design

Primary purpose: Health Services Research

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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1,831 participants in 3 patient groups

Rating and Ranking Group

Other group

Description:

A group of individuals from the United States and Australia who complete a rating and ranking task.

Treatment:

Other: Rating and Ranking Task

Discrete Choice Group

Other group

Description:

A group of individuals from the United States and Australia who complete a discrete choice experiment task.

Treatment:

Other: Discrete Choice Task

Balance Sheet Group

Other group

Description:

Individuals from the United States and Australia who will complete an implicit values clarification task

Treatment:

Other: Balance Sheet Task