Effectiveness of personalized advice using a cancer risk prediction tool on modifying lifestyle habits: a randomized controlled trial

Effectiveness of personalized advice using a cancer risk prediction tool on modifying lifestyle habits: a randomized controlled trial - A cancer risk prediction tool for lifestyle modification: a randomized controlled trial

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000031313

Enrollment

7000

Registered

2018-02-16

Start date

2018-02-16

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Healthy participants

Interventions

The intervention group was given personalized advice based on a probability calculated by a prediction model of 10-year cumulative cancer risk according to five healthy lifestyle habits, and invited t

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1) Individuals who bought life insurance from The Dai-ichi Life Insurance Company, Limited from November, 2017 to March, 2018 2) Individuals aged 40-64 years old on January 1st, 2018 3) Individuals who were both policy holders and insured persons on the life insurance contract 4) Individuals who consented to participating in this study and answered a baseline questionnaire 5) Individuals who had any one of five lifestyle habits used for calculation of cumulative cancer risk that needed improvement We sent a consent form and a baseline questionnaire to individuals who met criteria 1-3). Individuals who met criteria 1-5) were eligible for randomization. Individuals who met criteria 1-4) were eligible for the observational study.

Exclusion criteria

Exclusion criteria: None.

Design outcomes

Primary

Measure	Time frame
Change in lifestyle within 6 months after receiving an advice We defined the five healthy lifestyle habits as non-smoking, moderate or no alcohol consumption, moderate salt intake, adequate physical activity, and appropriate body mass index. Participants were assigned a score of 1 if they had the healthy lifestyle habit and a score of 0 if they did not. The individual scores were then summed and used as an index (5 = no risk factors; 0 = all risk factors). The primary outcome was defined as an increase in the index within 6 months after receiving an advice.	—

Measure

Time frame

Change in lifestyle within 6 months after receiving an advice We defined the five healthy lifestyle habits as non-smoking, moderate or no alcohol consumption, moderate salt intake, adequate physical activity, and appropriate body mass index. Participants were assigned a score of 1 if they had the healthy lifestyle habit and a score of 0 if they did not. The individual scores were then summed and used as an index (5 = no risk factors; 0 = all risk factors). The primary outcome was defined as an increase in the index within 6 months after receiving an advice.

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Secondary

Measure	Time frame
1. Participation in a program for lifestyle modification within 6 months after receiving an advice 2. Change in lifestyle within 12 months after receiving an advice 3. Change in each lifestyle habit within 6 and 12 months after receiving an advice 4. Associations between lifestyle at baseline or change in lifestyle and lifestyle-related diseases or death as an observational study	—

Countries

Japan

Contacts

Public ContactTaichi Shimazu

National Cancer Center, Japan Division of Prevention, Center for Public Health Sciences

riskcheck_RCT@ml.res.ncc.go.jp03-3547-5201(ext.3348)

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026