You Have Until Dec. 31, 2025 to Complete the 2024 Survey Online

2024 Triennial Survey Progress

Thanks to each one of the 130,000+ CPS-3 participants who have completed the online or paper Triennial Survey. About 79,300 of you responded to the online survey, and you make up 61% of the total surveys completed. About 50,700 of you responded by mail, and you make up 39% of the total.

Every 3 years, the Cancer Prevention Study-3 (CPS-3) research team sends a survey to all active CPS-3 participants.

Our most recent survey is the 2024 Triennial one (sometimes called the 2024 Follow-up Survey). It was first available online in March 2024, and we mailed paper copies in June 2024. Since then, we’ve made additional mailings to participants who hadn’t responded in October 2024, January 2025, and April 2025.

And now we’re giving you a last chance—if you haven’t responded to your 2024 survey yet, you still have time—until New Year’s Eve (December 31) of this year.

What CPS-3 Participants Have Said About the Triennial Survey

Watch this video to hear directly from some of our participants and researchers about the impact of CPS-3 on cancer research. They share what inspired them to become a participant and what drives them to complete each Follow-up Survey.

The Basics: CPS-3 Triennial Surveys

The goal of CPS-3 is to draw meaningful insights about, and develop recommendations for, cancer prevention and control strategies. Surveys are how we gather the information and data to make those insights and recommendations.

We send the surveys every 3 years, and each participant has a choice about how they want to answer:

Online through the CPS-3 Portal OR
On the paper survey received in the mail

Each Follow-up Survey covers a comprehensive list of questions about topics such as medical history, cancer screenings, genetic tests, and health behaviors like physical activity, sleep, diet, and smoking.

Don’t be surprised if you open a new survey and think, “Hey! I’ve answered some of these questions before.” You have. The reason we ask similar questions on each survey is to see if and how your health and lifestyle have changed over time.

But we also use surveys to ask you about new research topics (such as use of personal care products) aimed at continually improving our understanding about cancer risk factors.

Participation in these surveys is the foundation of our cancer prevention cohort studies. Each participant’s survey responses make up the data we use in cancer studies. The more people who answer—the more regularly you respond—the more reliable our study findings can be.

Most of our research is paid for by regular people—our donors. You can help us spend these donations wisely by finishing your survey promptly. The quicker we get responses, the fewer surveys and e-mail reminders we need to mail, which saves money and time.