Table 1

Study information

Data category	Information
Primary registry and trial identifying no	ClinicalTrials.gov NCT05365269; any important protocol modifications will be communicated here
Date of registration in primary registry	5 May, 2022
Secondary identifying numbers	D850000001
Source(s) of monetary or material support	Deutsche Krebshilfe (German Cancer Aid) University Medicine Greifswald
Primary sponsor	University Medicine Greifswald
Secondary sponsor(s)	Deutsche Krebshilfe (German Cancer Aid)
Principal investigators	JF-A, Prof. Dr.—Design, preparation of protocol, publication of study reports, trial management UJ, Prof. Dr.—Design, preparation of protocol, publication of study reports
Data management team	AT, FK, KS— Maintenance of trial IT system and data entry, data verification, data cleansing, participant flow documentation,
Contact for public queries	JF-A, Prof. Dr. (see corresponding author information) AT (see CTN record)
Contact for scientific queries	JF-A, Prof. Dr. (see corresponding author information)
Public title	Proactive automatised lifestyle intervention for cancer prevention in general hospital patients
Scientific title	Proactive automatised lifestyle intervention to prevent cancer in general hospital patients
Country of recruitment	Germany
Health condition(s) or problem(s) studied	Hospitalisation at a general hospital, irrespective of reason for admission and health risk behaviour profile
Intervention(s)	Proactive automatised lifestyle intervention consisting of computer-generated, individually tailored feedback on health risk behaviours; 3 times over 3 months
Key inclusion and exclusion criteria	Ages eligible for study: 18–64 years Sexes eligible for study: both Accepts healthy volunteers: no Inclusion criteria: General hospital patients admitted to participating wards of five medical departments (internal medicine A and B, surgical medicine, trauma medicine, ear-nose-throat-medicine) Exclusion criteria: patient cognitively or physically incapable, patient with highly infectious disease, patient discharged or transferred within the first 24 hours, patient already asked for participation during previous hospital stay, patient with insufficient language skills, patient employed at the conducting research institute, patient with neither telephone nor email
Study type	Interventional Allocation: All patients receive intervention Intervention model: Single-group assignment Masking: non-blinded as participants are informed about the intervention prior to participation Primary purpose: prevention
Date of first enrolment	31 May 2022
Target sample size	175
Recruitment status	Completed: 5 July 2022
Date of final data collection	Anticipated: 31 March 2023
Primary outcome(s)	Intervention reach (time frame: month 0) Intervention retention (time frame: months 1, 3)
Key secondary outcomes	Satisfaction with intervention (time frame: month 6) Change in health risk behaviours, that is, physical activity, diet, alcohol use, tobacco smoking, sum of health risk behaviours (time frame: months 0, 1, 3, 6) Change in motivational measures, that is, stage of change, self-efficacy, decisional balance, processes of change (time frame: months 0, 1, 3, 6) Change in health-related measures, that is, body mass index, general health, mental health, number of sick days, non-communicable diseases, utilisation of healthcare (time frame: months 0, 6)